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Materials and Components - Engineering

Q1:

The electric dipole moment of a neutral system of point charges Q1, Q2.... is Qiri . The charges Qi

A must be all positive

B must be all negative

C
must be such that Qi = 0

D either (a) or (b)

ANS:C -

must be such that Qi = 0

The system is neutral and hence sum is zero.