Question

A 10 m long copper wire while remaining in the east-west horizontal direction is falling down with a speed of 5.0 m/s. If the horizontal component of the earth’s magnetic field \( B = 0.3 \times 10^{-4} \, \text{Wb/m}^2 \) the emf developed between the ends of the wires is:

• A. 0.15 V
• B. 1.5 V
• C. 0.15 mV
• D. 1.5 mV

Hint:

When a conductor moves through a magnetic field, the induced emf depends on the velocity, magnetic field, and the length of the conductor.

Answer 1

The Correct Option is D