Subject: Physics, asked 14 hours, 49 minutes ago

Experts please answer... Question 1 Draw a circuit diagram showing a cell, a bulb and a closed switch. Question 2 ??????????????a)??How much work is done in moving a charge of 3 coulumb from a point at the volts 115 to a point at 125 volts? ??????????????b)??Ammeter burns out when connected in parallel. Give reasons. Question 3 Given n resistors each of resistors Rs. How will you combine them to get the (i) maximum and (ii) minimum effective resistance? What is the ratio of the maximum to minimum resistance? Question 4 a) A wire of length L and resistance R is stretched so that its length it?s doubled. How will the: (a) Resistance change(b) Resistivity change? ??????????????b)??In an experiment the current flowing through a resistor and potential difference across it are measured. The values are given below. Show that these values confirm Ohm?s Law ??????????????I (ampere) 1.0 1.0 2 1.5 2.0 2.0 2.5 2.5 3.0 3.0 ??????????????V (volt) 4.0 4.0 6.0 6.0 8.0 8.0 10.0 10.0 12.0 12.0 Question 5 a) A tube light draws 0.1 A current from a 220 V supply. What current will this tube light draw when it is connected to a 110 V supply? b) An electric wire is stretched to increase its length by 25%.By what % will the resistance be increased and what will be increase in its resistivity? Thank you so much! :)

Subject: Physics, asked 19 hours, 51 minutes ago

Subject: Physics, asked 1 day, 12 hours ago

Experts please answer... (a) The electric power consumed by a device may be calculated by using either of the two expressions P = 12R or P =V2/R . The first expression indicates that it is directly proportional to R whereas the second expression indicates inverse proportionality. How can the seemingly different dependence of P on R in these expressions be explained? (b)??(i) A 100 W electric bulb is connected to 220 V mains power supply. Calculate the strength of the electric current passing through the bulb. (ii) If the same bulb is taken to U.S.A where the main power supply is 110 V, how much electric current will pass through the bulb when connected to mains? Thank you! :)

Subject: Physics, asked 1 day, 14 hours ago

What is the power of a convex mirror whose focal length is 25 cm?

Subject: Physics, asked 1 day, 16 hours ago

Is 9.8 ? 10^-12 coulomb charge is possible on a body?

Subject: Physics, asked 1 day, 20 hours ago

Why the class is not started it's already 1:51

Subject: Physics, asked 1 day, 22 hours ago

In the given circuit diagram , the cell and ammeter, both have negligible resistance. The resistances are identical. With the switch 'k' open, the ammeter reads 0.6A. What will be the ammeter reading when the switch is closed?

Subject: Physics, asked 1 day, 22 hours ago

3 cylindrical copper conductors having length L , 2L and L/2 respectively have their face areas A, A/2 and 2A respectively are given. Which of the conductors willhave the highest resistance and why? Compare their resistivity.

Subject: Physics, asked 2 days, 12 hours ago

If resistance is 8r and volt is 48v then how many e charge in five seconds ?

Subject: Physics, asked 3 days, 21 hours ago

I really don't understand this whole part... Can someone please explain it? How did 1C become equal to 1/ 1.6 * 10-19 electrons???

Subject: Physics, asked 4 days ago

Lease solve the question expert.....

Subject: Physics, asked 4 days, 10 hours ago

Maximum resistance is in series connection or in parallel connection?

Subject: Physics, asked 6 days, 15 hours ago