816. 1 Coulomb's force law for pointlike charges 8 16.1 Coulomb's force law for pointlike charges insulator Electric dipole electrical polarization conductor induction grounding3 §16.1 Coulomb’s force law for pointlike charges §16.1 Coulomb’s force law for pointlike charges + + + + + −−− − − − − −− − − + + +++ + ++ + + + −− − − − − − −− − − induction + + + + + grounding conductor induction + + +++ + electrical polarization insulator − + − + − + − + − + − + − + Electric dipole