JEE PYQ: Electromagnetic Induction Question 25
Question 25 - 2019 (12 Jan Shift 1)
A 10 m long horizontal wire extends from North East to South West. It is falling with a speed of 5.0 ms$^{-1}$, at right angles to the horizontal component of the earth’s magnetic field, of $0.3 \times 10^{-4}$ Wb/m$^2$. The value of the induced emf in wire is:
(1) $1.5 \times 10^{-3}$ V
(2) $1.1 \times 10^{-3}$ V
(3) $2.5 \times 10^{-3}$ V
(4) $0.3 \times 10^{-3}$ V
Show Answer
Answer: (1)
Solution
Induced emf $\varepsilon = Bvl = 0.3 \times 10^{-4} \times 5 \times 10 = 1.5 \times 10^{-3}$ V.
BETA
