Which of the following statements are incorrect? (a) The conductivities of conductors and insulators vary with temperature
Question:
Which of the following statements are incorrect?
(a) The conductivities of conductors and insulators vary with temperature and frequency.
(b) A conductor is an equipotential body in steady state, and E is always tangential to the conductor.
(c) Nonpolar molecules have no permanent dipoles.
(d) In a linear dielectric, P varies linearly with E.
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