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1. |
A coil of 500 turns wound on a core of non-magnetic material has an inductance of 20 mH. The average value of the EMF induced when a current of 2 A is reversed in 5 ms is: |
A. | 8 V |
B. | 16 V |
C. | 6 V |
D. | 24 V |
Answer» C. 6 V | |