Question

When we rub a comb with dry hair, it have electricity. But why we preferred dry hair?

Answer 1

• Basically, when an electrification takes place, electrons are not created but they are transferred
• in the case of comb attracting tiny tiny bits of papers when rubbed with dry hair is because electrons from the dry hair gets transferred to the comb and now the comb induces a dipole in the bitties of paper and the .

Answer 2

Explanation:

we prefered dry hair because rubbing on rough surface conducts electricity but where as smooth surface don't

example:::

scientists cannot see a black hole as it has no light but when it absorbing the power of neutron star it glows due to friction.

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