∑
Math
Magic
Features
Olympiad
Puzzles
Practice
Download Free
← Back to Test
Problem 4 - Olympiad
Two coils have mutual inductance of 2 H. If current in the first coil changes at 4 A/s, what is the induced EMF in the second coil?
A. 8 V
B. 2 V
C. 4 V
D. 0.5 V
Check Answer
Show Solution
Correct: A
EMF₂ = M*dI/dt = 2*4 = 8 V.