Question

A circular coil and a bar magnet placed near by are made to move in the same direction. The coil covers a distance of 1 m in 0.5 sec and the magnet a distance of 2 m in 1 sec. The induced emf produced in the coil

• A. Zero
• B. 1 V
• C. 0.5 V
• D. Cannot be determined from the given information

Answer 1

Answer: (A)

Zero

Answer 2

Speed of the magnet $v_{1} = \frac{2}{1} = 2m/s$

Speed of the coil $v_{2} = \frac{1}{0.5} = 2m/s$

Relative speed between coil and magnet is zero, so there is no induced emf in the coil.