12. A current that changes as I=11-22-t, where the current is in milliamperes and the time is in seconds, generates a back emf of 45 mV in a solenoid. What is the energy stored in the solenoid at time t = 1.93 sec? A. 1 mJ B. 2 mJ C. 3 mJ D. 4 mJ E. 5 mJ
12. A current that changes as I=11-22-t, where the current is in milliamperes and the time is in seconds, generates a back emf of 45 mV in a solenoid. What is the energy stored in the solenoid at time t = 1.93 sec? A. 1 mJ B. 2 mJ C. 3 mJ D. 4 mJ E. 5 mJ
Physics for Scientists and Engineers with Modern Physics
10th Edition
ISBN:9781337553292
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter31: Inductance
Section: Chapter Questions
Problem 4P
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