A long solenoid (n = 1500 turns/m) has a cross-sectional area of 0.40 m2 and a current given by I = (4.0 + 3.0t2) A, where t is in seconds. A flat circular coil (N = 300 turns) with a cross-sectional area of 0.15 m2 is inside and coaxial with the solenoid. What is the magnitude of the emf induced in the coil at t = 2.0 s?
A. 2.7 V
B. 1.0 V
C. 6.8 V
D. 0.68 V
E. 1.4 V
Answer: B
Physics & Space Science
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