Answered: R Figure P20.43 ll

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter2: Vectors

Section: Chapter Questions

Problem 21CQ: What is wrong with the following expressions? How can you correct them? (a) C=AB , (b) C=AB , (c)...

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Question

The battery terminal voltage in Figure P20.43 is ε = 9.00 V
and the current I reaches half its maximum value of 2.00 A at
t = 0.100 s after the switch is closed. Calculate (a) the
time constant τ. (b) What is the emf across the inductor at
t = 0.100 s? (c) What is the emf across the inductor in the
instant after the switch is closed at t = 0?

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