Find the ratio of the potential difference that must be applied across the parallel. and series combination of two capacitors C 1 ​ and C 2 ​ with their capacitances in the ratio 1:2 so that the energy stored in the two cases becomes the same.

Densities of two gases are in the ratio 1: 2 and their temperatures are in the ratio 2:1 , then the ratio of their respective pressure is

Compare the resistance of two wires of same material. Their lengths are in the ratio 2:3 and their diameters are in the ratio 1:2

In the circuit shows find the phase difference between the potential differences across C and R_2

A parallel plate capacitor of capacitance C is charged to a potential V. It is then connected to another uncharged capacitor having the same capacitance. Find out the ratio of the energy stored in the combined system to that stored initially in the single capacitor.

A battery is used to charge a parallel plate capacitor till the potential differece between the plates becomes equal to the electromotive force of the battery. The ratio of the energy stored in the capacitor and the work done by the battery will be

Three identical resistors are first connected in series and then in parallel find the ratio of the equivalent resistance in two cases ​

A large magnet is broken into two pieces, so that their lengths are in the ratio 2:1. The pole strengths of the two piece will be

A series combination of three resistors takes a current of 2A from a 24V supply. If the resistors are in the ratio 1 : 2 :3, find the value of unknown resistors.

The given graph shows the variation of charge q versus potential differences V for two capacitors C_1 and C_2 . The two capacitors have the same plate separation but the plate area of C_2 is double than that of C_1 . Which of the lines in the graph correspond to C_1 and C_2 and why?