28. Eq. 27-23 gives ε2/Ras the rate of energy transfer into thermal forms (dEth/dt, which, from Fig. 30-55(c), is roughly 40 nJ/s). Interpreting as the induced emf (in absolute value) in the single-turn loop (N= 1) from Faraday’s law, we have ()BddBAdBAdtdtdtΦ===. Eq. 29-23 gives B= µonifor the solenoid (and note that the field is zero outside of the solenoid – which implies that A = Acoil ), so our expression for the magnitude of the induced emf becomes
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This note was uploaded on 06/03/2011 for the course PHY 2049 taught by Professor Any during the Spring '08 term at University of Florida.