A 20 m long uniform copper wire held... | EMI | JEE Main 2026

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JEE MAIN 2026

23-01-2026 S1

Question

A 20 m long uniform copper wire held horizontally is allowed to fall under the gravity ( $g=10 \mathrm{~m} / \mathrm{s}^2$ ) through a uniform horizontal magnetic field of 0.5 Gauss perpendicular to the length of the wire. The induced EMF across the wire when it travells a vertical distance of 200 m is $\_\_\_\_$ mV.

Select the correct option:

A

$0.2 \sqrt{10}$

B

$20 \sqrt{10}$

C

$2 \sqrt{10}$

D

$200 \sqrt{10}$

✓ Correct! Well done.

✗ Incorrect. Try again or view the solution.

Solution

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Physics

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