Appeared in: 2025 (3 sets)
A metal rod of length $50\text{ cm}$ is held vertically and moved with a velocity of $10\text{ m/s}$ towards east. The horizontal component of the Earth's magnetic field at the place is $0\cdot4\text{ G}$. The emf induced across the ends of the rod is :
(A) $0\cdot1\text{ mV}$
(B) $0\cdot2\text{ mV}$
(C) $0\cdot8\text{ mV}$
(D) $1\cdot6\text{ mV}$