JEE PYQ: Magnetism And Matter Question 16
Question 16 - 2019 (10 Jan 2019 Shift 1)
A solid metal cube of edge length $2$ cm is moving in a positive $y$-direction at a constant speed of $6$ m/s. There is a uniform magnetic field of $0.1$ T in the positive $z$-direction. The potential difference between the two faces of the cube perpendicular to the $x$-axis, is:
(1) 12 mV
(2) 6 mV
(3) 1 mV
(4) 2 mV
Show Answer
Answer: (1) 12 mV
Solution
$\text{p.d.} = l \cdot v \cdot B = 2 \times 10^{-2} \times 6 \times 0.1 = 12$ mV
BETA
