Chapter 31 Serway & Jewett 6 th Ed.

Fig 31-1, p.969

Fig 31-8, p.973

Fig 31-19, p.981

Maxwell’s Equations Gauss’s Law Faraday’s Law Ampère’s Law

I B Symmetry between B-field produced by current loop and circular B-field produced by a straight current Symmetry between B-field produced by current loop and circular B-field produced by a straight current

1. Torque on a loop with constant current in a constant B-field. 2. What happens if I supply a torque to a conducting loop? Symmetry Ans:generate a current; principle of the generator Principle of the electric motor.

B

Inductive Heating

AC Motor

DC Motor