A circular coil of n t urns and radius r is placed in a uniform magnetic field B. Initially the plane of the coil is perpendicular to the field. The coil is rotated through 90o. The resistance of the coil is ONE OHM. The quantity of charge passing through the coil is

see full answer

Talk to JEE/NEET 2025 Toppers - Learn What Actually Works!

Real Strategies. Real People. Real Success Stories - Just 1 call away

An Intiative by Sri Chaitanya

n π r2 B

n2 π r2 B

n π r B

n π r B2

answer is A.

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Rate of change of flux=0−nπr2BΔt=−nπr2BΔtlnduced e.m.f. =−nπr2BΔt∴Q=∫idt=nπr2BΔt×1RΔt=nπr2B

Watch 3-min video & get full concept clarity