A coil with 800 turns is placed in a magnetic field that changes from 0.4 T to 0.7 T in 0.2 s. What is the average induced EMF if the coil's area is 0.03 m^2?
Q1. A coil with 800 turns is placed in a magnetic field that changes from 0.4 T to 0.7 T in 0.2 s. What is the average induced EMF if the coil's area is 0.03 m^2?
Answer: 36 V
Explanation: Average induced EMF = N*A*dB/dt = 800*0.03*(0.7-0.4)/0.2 = 36 V. Option B fails due to miscalculation.