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Explain the principle ,working and construction of moving coil galvanometer.
Explain the working and principle of CYCLOTRON!!!WITH DIAGRAM!!
what is the proper statement for biot savart's law?
construction and working of moving coil galvanometer
why do we need a radial field in moving coil galvanometer??
what is current sensitivity nd voltage sensitivity...define maximum
A CYCLOTRON,S OSCILLATOR FREQUENCY IS 10 MHz. WHAT SHOULD BE THE OPERATING MAGNETIC FIELD FOR ACCELERATING PROTONS? IF THE RADIUS OF ITS DEES IS 60cm, WHAT IS THE KINETIC ENERGY OF THE PROTON BEAM PRODUCED BY THE ACCELERATOR? EXPRESS YOUR ANSWER IN MeV.
what is cyclotron and how it works?
What is resonance condition in cyclotron? How is it used to accelerate the charged particles ?
what is the main difference between solenoid and toroid?
17 (a) an infinitely long positively charged straight wire has a linear charge density of lamda cm(inverse). and electron is revolving around the wire as its centre with a constant velocity in a circular plane perpendicular to the wire. deduce the expression for its kinetic energy.
(b) plot a graph of the kinetic energy as a function of charge density lamda.
what r the limitations of cyclotron?
Please give the derivation of Magnetic Field at
1: Axial Position
2: Equatorial Position
Define dielectric constant of a medium in terms of force between electric charges.
a current of 10 A is flowing east to west in a long wire kept horizontally in east west direction. find magnetic field and its direction in the horizontal plane at a distance of
(i)10 cm north
(ii) 20 cm south from the wire.
and in the verical plane at a distance of
(i)40 cm downward
(ii)50 cm upward.
State Ampere's Circuital Law. Use it to derive the magnetic field along the axis of a current carrying solenoid of length 'l' having 'n' number of turns.
a straight long thick wire of uniform cross section of radius 'a' is carrying a steady current I.use ampere's circuital law to obtain a relation showing the variation of magnetic field (B) inside the wire with distance r , (r<=a) and(r>a) of the field point from the center of its cross section .Plot a graph showing the nature of this variation.
Calculate the ratio of the magnetic field at a point a/2 above the surface of the wire to that at a point a/2 below its surface.What is the max value of the field of this wire?
defnation of ampere's circuital law
what is the function of the soft iron core in a moving coil galvanometer
A weight Mg is suspended from the middle of a rope whose ends are at the same level. The rope is no longer horizontal. The minimum tension required to completely straighten the rope is ????(1) Mg/2 ......(2) Mgcos (theta).......(3) 2Mgcos ( theta) ....(4) Infinitely large......
why magnetic field lines form closed curve ??
If the current sensitivity of a moving coil galvanometer is increased by 20%, its resistance also increases by 1.5 times.How will the voltage sensitivity of galvanometer be affected?
A coil of N turns and radius R carries a current I. It is unwound and rewound to make another
coil of radius R/2, current remaining the same. Calculate the ratio of the magnetic moment of the
new coil and original coil.
The magnetic field is linear in the source Idl just as the electrostatic field is linear in its source ie. electric charge. Explain
magnetic field lines can be entirely confined within the core of a toroid but not within a straight solenoid. Why?
Please explain me first the meaning of the question and then the answer
state amperes circuital law??????????????
Two identical circular loops, P and Q, each of radius r and carrying currents I and 2I respectively are lying in parallel plans such that they have a common axis.
The direction of current in both the loops is clockwise as seen from center . Find the magnitude of the net magnetic field at the center.
Q.44. If diffraction occurs through a single slit then intensity of first secondary maxima become ............... of central maxima :- (1) 4% (2) 25% (3) 75% (d) 50%
Two point charges, q1 and q2, are located at points (a, o, o) and (o, b, o)respectively. Find the electric field, due to both these charges, at the point,(o, o, c).
Described qualitatively the path of the charged particle moving in uniform electrostatic
(i)parallel to the field
(ii) Perpendicular to the field
(iii) at any arbitrary angle with field direction.
An electron after being accelerated through a potential difference of 104 Volt enters a uniform magnetic field of 0.04T perpendicular to its direction of motion.Calculate the radius of curvature of its trejectory?
what are the application and limitation of ampere's circuital law
Sketch the graph showing variation of resistivity of carbon with temperature
what is the SI unit of current sensitivity in moving coil galvanometer?
Calculate the Magnetic field induction at the centre of a coil bent in the form of square of side 10cm carrying current of 10A.
A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that B vector is in plane of the coil. if due to a current i in the triangle a torque torque acts on it, the side l of the triangle is
How to Convert, Galvanometer into a Voltmeter?
What is pitch of the helical path followed by a charged particle moving along and making an angle θ with the magnetc field ?
Which one will experience maximum force when projected with the same velocity 'v' perpendicular to the magnetic field B, alpha particle or beta particle?
A coil of wire has an area of 600 sq. cm and has 500 turns. If it carries 1.5 A current, its magnetic dipole moment is:-
A beam of alpha particles projected along +x axis, experience a force due to magnitic field along the +y axis. What is the direction of the magnetic field?
how to find refractive index of aliquid using plane mirror and convex lens
State two factors on which sensitivity of a moving coil galvanometer depends?
an alpha particle and a proton are released from the centre of the cyclotron and made to accelerate 1. can both be accelerated at the same cyclotron frequency give reason 2.when they are accelerated in turn which of the two will have higher velocity at the exit of the dees.
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Syllabus
Explain the principle ,working and construction of moving coil galvanometer.
1) at a point on d axis of d coil at a distance of 40 cm frm its centre n
2) at d centre of d coil
Explain the working and principle of CYCLOTRON!!!WITH DIAGRAM!!
Diamagnetic ferromagnetic and paramagnetic
Are respectively
Zero zero zero
Zero non zero zero
Zero zero non zero
Zero nonzero non zero
Pls explain this
what is the proper statement for biot savart's law?
construction and working of moving coil galvanometer
A) 5.75 × 10−5 T B) 6.88 × 10−5 T C) 7.25 × 10−5 T D) 8.08 × 10−5 T
why do we need a radial field in moving coil galvanometer??
an electron accelerated by a potential difference of 300V ,is moving at a distance of 4mm from a long staight wire.If current of 5A flows through the wire,what will be the force acting on the electron?
ans is 4*10^-16N
V
what is current sensitivity nd voltage sensitivity...define maximum
An electron of 40 eV energy is revolving in a circular path in a magnetic field of 9*10^-5T.Determine (i)speed of the electron (ii)radius of the circular path .
ans is (i03.75*10^6m s^-1,(ii)23.7cm
A CYCLOTRON,S OSCILLATOR FREQUENCY IS 10 MHz. WHAT SHOULD BE THE OPERATING MAGNETIC FIELD FOR ACCELERATING PROTONS? IF THE RADIUS OF ITS DEES IS 60cm, WHAT IS THE KINETIC ENERGY OF THE PROTON BEAM PRODUCED BY THE ACCELERATOR? EXPRESS YOUR ANSWER IN MeV.
what is cyclotron and how it works?
(1) ACW, In horizontal plane
(2) ACW, In vertical plane
(3) CW, In horizontal plane
(4) CW, In vertical plane
What is resonance condition in cyclotron? How is it used to accelerate the charged particles ?
Q.24. A solenoid of length 20 cm and radius 2 cm is closely wound with 200 turns. The magnetic field intensity at either end of the solenoid when the current in the winding is 5 amp. is
1 ) 2500 Amp/m
2) 2000 Amp/m
3) 1750 Amp/m
4) 2940 Amp/m
what is the main difference between solenoid and toroid?
17 (a) an infinitely long positively charged straight wire has a linear charge density of lamda cm(inverse). and electron is revolving around the wire as its centre with a constant velocity in a circular plane perpendicular to the wire. deduce the expression for its kinetic energy.
(b) plot a graph of the kinetic energy as a function of charge density lamda.
what r the limitations of cyclotron?
Please give the derivation of Magnetic Field at
1: Axial Position
2: Equatorial Position
Define dielectric constant of a medium in terms of force between electric charges.
a current of 10 A is flowing east to west in a long wire kept horizontally in east west direction. find magnetic field and its direction in the horizontal plane at a distance of
(i)10 cm north
(ii) 20 cm south from the wire.
and in the verical plane at a distance of
(i)40 cm downward
(ii)50 cm upward.
State Ampere's Circuital Law. Use it to derive the magnetic field along the axis of a current carrying solenoid of length 'l' having 'n' number of turns.
a straight long thick wire of uniform cross section of radius 'a' is carrying a steady current I.use ampere's circuital law to obtain a relation showing the variation of magnetic field (B) inside the wire with distance r , (r<=a) and(r>a) of the field point from the center of its cross section .Plot a graph showing the nature of this variation.
Calculate the ratio of the magnetic field at a point a/2 above the surface of the wire to that at a point a/2 below its surface.What is the max value of the field of this wire?
an alpha particle is moving along a circle of radius 0.45m in a magnetic field of 12T.Find (i)the speed of the paticle ,(ii)the time period of the particle.(mass of alpha particle is 6.7*10^-27kg).
ans is (i)2.58*10^8m per secs,(ii)1.09*10^-8s
defnation of ampere's circuital law
what is the function of the soft iron core in a moving coil galvanometer
second vessel is expanded adiabatically the sarne extent, then :
(1) In the second vessel, both pressure and work done are more
(2) In the second vessel, pressure in more, but the work done is less.
(3) In the first vessel, both pressure & work done are more.
(4) In the first vessel, pressure is more, but work done is less
A weight Mg is suspended from the middle of a rope whose ends are at the same level. The rope is no longer horizontal. The minimum tension required to completely straighten the rope is ????(1) Mg/2 ......(2) Mgcos (theta).......(3) 2Mgcos ( theta) ....(4) Infinitely large......
(1) ACW, In horizontal plane
(2) ACW, In vertical plane
(3) CW, In horizontal plane
(4) CW, In vertical plane
why magnetic field lines form closed curve ??
If the current sensitivity of a moving coil galvanometer is increased by 20%, its resistance also increases by 1.5 times.How will the voltage sensitivity of galvanometer be affected?
1) 2v/B2R2
2)v/2BR
pl show the method.[the ans- (1)]
A coil of N turns and radius R carries a current I. It is unwound and rewound to make another
coil of radius R/2, current remaining the same. Calculate the ratio of the magnetic moment of the
new coil and original coil.
The magnetic field is linear in the source Idl just as the electrostatic field is linear in its source ie. electric charge. Explain
magnetic field lines can be entirely confined within the core of a toroid but not within a straight solenoid. Why?
Please explain me first the meaning of the question and then the answer
1. 0.1V/M 2. 1.0V/M 3. 10.0 V/M 4. 100 V/M
[Answer: (i) , perpendicular to the plane of paper pointing downwards, (ii) ]
state amperes circuital law??????????????
Two identical circular loops, P and Q, each of radius r and carrying currents I and 2I respectively are lying in parallel plans such that they have a common axis.
The direction of current in both the loops is clockwise as seen from center . Find the magnitude of the net magnetic field at the center.
1) The capacitor remains connected to the same battery
2) The capacitor is disconnected from the battery
Q.44. If diffraction occurs through a single slit then intensity of first secondary maxima become ............... of central maxima :-
(1) 4%
(2) 25%
(3) 75%
(d) 50%
Two point charges, q1 and q2, are located at points (a, o, o) and (o, b, o)
respectively. Find the electric field, due to both these charges, at the point,
(o, o, c).
Described qualitatively the path of the charged particle moving in uniform electrostatic
(i)parallel to the field
(ii) Perpendicular to the field
(iii) at any arbitrary angle with field direction.
(a) s = 2
(b) s =
(c) s =
(d) None of these
placed with its longer side parallel to a long straight conductor 2cm apart carrying of 25A. What
is the net force on the loop?
An electron after being accelerated through a potential difference of 104 Volt enters a uniform magnetic field of 0.04T perpendicular to its direction of motion.Calculate the radius of curvature of its trejectory?
wire. The ratio of electric field on the spheres is
(1) 3 : 2
(2) 2 : 3
(3) 9 : 4
(4) 4 : 9
what are the application and limitation of ampere's circuital law
Sketch the graph showing variation of resistivity of carbon with temperature
what is the SI unit of current sensitivity in moving coil galvanometer?
Calculate the Magnetic field induction at the centre of a coil bent in the form of square of side 10cm carrying current of 10A.
A coil in the shape of an equilateral triangle of side l is suspended between the pole pieces of a permanent magnet such that B vector is in plane of the coil. if due to a current i in the triangle a torque torque acts on it, the side l of the triangle is
How to Convert, Galvanometer into a Voltmeter?
What is pitch of the helical path followed by a charged particle moving along and making an angle θ with the magnetc field ?
Which one will experience maximum force when projected with the same velocity 'v' perpendicular to the magnetic field B, alpha particle or beta particle?
velocity v towards East. The vertical component of
earth magnetic field is B and angle of dip is θ. The
induced e.m.f. in rod is
(1) Blv cot θ (2) Blv sin θ
(3) Blv tan θ (4) Blv cos θ
A coil of wire has an area of 600 sq. cm and has 500 turns. If it carries 1.5 A current, its magnetic dipole moment is:-
A beam of alpha particles projected along +x axis, experience a force due to magnitic field along the +y axis. What is the direction of the magnetic field?
how to find refractive index of aliquid using plane mirror and convex lens
Q. A current carrying wire AB of the length 2R is turned along a circle as shown in figure. The magnetic field at the centre O.
Why do we use this formula B=ui/4pir sintheta in this question
State two factors on which sensitivity of a moving coil galvanometer depends?
ans is-turns must be increased from 24 to 30;voltage sensitivity will fall by 25%.
an alpha particle and a proton are released from the centre of the cyclotron and made to accelerate 1. can both be accelerated at the same cyclotron frequency give reason 2.when they are accelerated in turn which of the two will have higher velocity at the exit of the dees.