Q. A straight conductor of length $4m$ moves at a speed of $10m/s$. When the conductor makes an angle of $30{^\circ}$ with the direction of magnetic field of induction of $0.1\ wb.m^{2}$ then induced emf is
A) $8\ V$
B) $4\ V$
C) $1\ V$
D) $2\ V$
Explanation
(d) Induced $emf$ is given by
$e = BvI\sin\theta = 0.1 \times 10 \times 4\sin{30{^\circ}} = 2\ volt$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.