Two tiny wire loops, with areas a1 and a2, are situated a
Chapter 7, Problem 32P(choose chapter or problem)
Problem 32P
Two tiny wire loops, with areas a1 and a2, are situated a displacement apart (Fig. 7.42).
(a) Find their mutual inductance. [Hint: Treat them as magnetic dipoles, and use Eq. 5.88.] Is your formula consistent with Eq. 7.24?
(b) Suppose a current I1 is flowing in loop 1, and we propose to turn on a current I2 in loop 2. How much work must be done, against the mutually induced emf, to keep the current I1 flowing in loop 1? In light of this result, comment on Eq. 6.35.
Equation 5.88
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