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Subject: Physics, asked on 26/6/21

Defination for ohm's law

Subject: Physics, asked on 26/6/21

When we say that electricity is flow of charges then, at the same time, how can we say that its flow of electrons. I got the answer of this on internet that flow of charges is according to conventional understanding of electricity and flow of electrons based on the new understanding of it. Then I got to know that by Benjamin Franklin's theory positive(+) denotes that there is Surplus of charge while the negative means that there is deficiency of charge. So is this theory related to the anode and cathode (of an electrolytic Cell) or some other thing. And my other question is how are anode and cathode related to Potential Difference?

Subject: Physics, asked on 26/6/21

Please answer this question-

Subject: Physics, asked on 25/6/21

The figure shows four resistors of 20 ? and one resistor of 10 ? connected in series to a 9 V voltage source.
Q3.What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4 ?, 8 ?, 12 ?, 24 ??

Subject: Physics, asked on 25/6/21

Explain this part

Subject: Physics, asked on 25/6/21

Q1.Derive an expression of equivalent resistance for series combination of resistors.

Q2.A battery with a terminal voltage of 9~\mathrm{V} is connected to a circuit consisting of four 20{ext -}\Omega and one 10{ext -}\Omega resistors all in series. Assume the battery has negligible internal resistance.Calculate the (a)current through each resistor. (b) the potential drop across each resistor (c) equivalent resistance

The figure shows four resistors of 20 ? and one resistor of 10 ? connected in series to a 9 V voltage source.
Q3.What is (a) the highest, (b) the lowest total resistance that can be secured by combinations of four coils of resistance 4 ?, 8 ?, 12 ?, 24 ??

Subject: Physics, asked on 25/6/21

A 3 kW heater is switched on for 3 hours. How much energy is transferred in this time? 

Subject: Physics, asked on 24/6/21

Please help me with this question

Subject: Physics, asked on 23/6/21

Plz experts answer question no 5
Asap

Subject: Physics, asked on 23/6/21

Please help me do this question

Subject: Physics, asked on 20/6/21

Find the resistance of a copper wire of length 2m and area of cross section 1.7 ? 10^6 meter-square. ( Electricity - Class 10 ) Thank you !

Subject: Physics, asked on 20/6/21

Pls do this sum

Subject: Physics, asked on 20/6/21

Kindly refer the image attached below. Thank you !

Subject: Physics, asked on 20/6/21

Q no 8 pls...

Subject: Physics, asked on 19/6/21

Please refer the image attached herewith and kindly solve the subdivision (b). Thank you !

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