Explain why a glass rod can be charged by rubbing when held in hand but an iron rod cannot be charged by rubbing,if held in hand?
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You can not statically charge a piece of iron because in an iron rod any electric charges do not stick to the location where you put them. They will flow away, e.g. into your hand.
If you rub two different isolating materials against each other, the electrons on the surface will redistribute until there is an equilibrium, and often the result is an uneven distribution over the two leaving one positively and the other negatively charged.
If you rub two different isolating materials against each other, the electrons on the surface will redistribute until there is an equilibrium, and often the result is an uneven distribution over the two leaving one positively and the other negatively charged.
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