Question

True or false.

14. The charge on an insulator may be distributed uniformly throughout its volume.

15. The charge on a conductor may be distributed uniformly throughout its volume.

16. The electric fireld inside a conductor in static equilibrium is always positive.

17. The electrical potential inside a conductor in static equilibrium is constant.

18. As a positive charge moves in the direction of the electric field its electric potential decreases.

Answer 1

14 true. the charge given to an insulator remains at the point it is embedded since there are no free electrons in the insulator for mobilization of charge.

15 false.. In case of a conductor there are present free electrons which try to mobilize the net charge such that the energy of the system becomes minimum possible. So all the charge comes out on the surface of the conductor and no charge remains in the volume.

16 false. The electric field inside a conductor is always zero.

17 true.. Since the electric field inside the conductor is zero therefore the electric potential is same all over the conductor.

18 true. Any charge if released moves such a way so as to minimize its potential energy. So a positive charge kept in an electric field moves in the direction of electric field and its potential energy decreases.