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When a comb rubbed with dry hair attract...

When a comb rubbed with dry hair attracts pieces of paper. This is because the

A

a)comb polarizes the piece of paper

B

b)comb induces a net dipole moment opposite to the direction of field

C

c)electric field due to the comb is uniform

D

d)comb induces a net dipole moment perpendicular to the direction of field

Text Solution

Verified by Experts

The correct Answer is:
B
When a comb rubbed with dry hair attracts pieces of paper. This is because the comb induces a net dipole moment opposite to the direction of field. This happens the field due to charge on comb induces dipole moment in paper by stretching or re-orienting molecules of the dielectric.
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