Question

A very long uniformly charged rod falls with a constant velocity $V$ through the centre of a circular loop. Then the magnitude of induced emf in the loop is

• A. $\frac{{\mu }_0}{2\pi }\lambda V^2$
• B. $\frac{{\mu }_0}{2}\lambda V^2$
• C. $\frac{{\mu }_0}{2\lambda }V$
• D. zero

Answer 1

Answer: (D)

As charged rod is moving with constant velocity
$\therefore$ Magnetic field due to its motion is also constant, no change in flux so no emf.