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 capacitance in the ratio `1:2`, so that the energy stored in these two cases becomes the same.

In the series combination of three capacitors of capacitances C_1, C_2, C_3, the equivalent capacitance will be

Net capacitance of three identical capacitors in series is 1muF . What will be their net capacitance in parallel? Find the ratio of energy stored in two configuration if they are connected to the same source.

A potential difference of 100 v is applied across a wire for two minutes. If the current through the wire is 0.1 A , find the heat produced in joule.

Net capacitance of three identical capacitors in series is 1muF . What will be their net capacitance if connected in parallel? Find the ratio of energy stored in the two configurations, if they are both connected to the same source.

Two condensers of capacity 3 mu F and 6 mu F respectively are connected in series . The combination is connected across a potential of 6 V. The ratio of the energies stored by the condensers will be

An A.C. voltage is applied to parallel combination of inductance 2 mH and a capacitor 3.2 muF . Calculate the resonant frequency.

The resistance of a conductor is 10 ohm. Find the current through it when a potential difference of 2 V is applied across it. To pass the same current through a conductor of resistance 40 Omega , how much potential difference should be applied across it?

A potentiometer wire is 100 cm long hand a constant potential difference is maintained across it. Two cells are connected in series first to support one another and then in opposite direction. The balance points are obatined at 50 cm and 10 cm from the positive end of the wire in the two cases. The ratio of emfs is:

If at same temperature and pressure, the densities for two diatomic gases are respectively rho_1 and rho_2 , then the ratio of velocities of sound in these gases will be