Physics Past Questions and Answers

Two inductors of inductances 5 mll and 15 mll are connected in series and a current of 5A flows through them. the total energy stored in the inductor is

In alternating current circuit at resonance, the angel of lead or lag is

In a discharge tube, most of the gas is pumped out so that electricity is conducted at

The ground stated energy for the hydrogen atom is 5.44 x 10<sup style='font-size: smaller;'>-19</sup>J . If an electron drops from zero energy to ground state, calculate the frequency of the emitted radiation. <br/>[h = 6.6 x 10<sup style='font-size: smaller;'>-34</sup> Js]

Transistors are used for the