Physics Past Questions and Answers

The binding energy of helium He is

4

2

[atomic mass of proton = 1.00783U,
atomic mass of neutron = 1.00867U]

Flourescent tubes produces light by the

The energy stored in an inductor of inductance 5mH when a current of 6A flows through it is

Which of the following is an electrolyte?

A steady current of 2A flows in a coil of emf 12V for 0.4s. A back emf of 3V was induced during this period. The stored energy in the loop that can be utilized is