Select the correct statement about electric charge
Charge can be converted into energy and energy can be converted into charge
Charge of a particle increases with increase in its velocity
Charge on a body is always integral multiple of a certain charge called charge of electron
Charge on a body is always positive or zero
Discuss the historical observation of frictional electrics.
Discuss the phenomena experienced due to electrostatics.
What are called electrically charged and electrically neutral bodies ?
A glass rod rubbed with silk is used to charge a gold leaf electroscope and the leaves are observed to diverge. The electroscope thus charged is exposed to $X$-rays for a short period. Then
How can object be charged with contact ?