A coil of circular cross-section having 1000 turns and 4 cm2 face area is placed with its axis parallel to a magnetic field which decreases by 10–2 Wb m–2 in 0.01 s. The e.m.f. induced in the coil is:
A. 400 mV
B. 200 mV
C. 4 mV
D. 0.4 mV
Answer:A
A coil of circular cross-section having 1000 turns and 4 cm2 face area is placed with its axis parallel to a magnetic field which decreases by 10–2 Wb m–2 in 0.01 s. The e.m.f. induced in the coil is:
A. 400 mV B. 200 mV C. 4 mV D. 0.4 mV