If the self-inductance of a solenoid is 0.5 H and the current through it changes at a rate of 4 A/s, what is the magnitude of the induced emf in the solenoid?
A.
4 V
B.
0.125 V
C.
8 V
D.
2 V
Exam No：66929bbe4409a2411a5d061d Year：2024 Question No：APPhysicsCEM2024AP0070
Answer:
D
Knowledge points:
5.2 Electromagnetism: Inductance (Including LR circuits)
Solution:
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