Chapter: Electromagnetic induction· Physics

The current in a coil changes from 50A to 10A in 0.1 second. The self inductance of the coil is 20H. The induced e.m.f. in the coil is _____.

Q.1 (viii) The current in a coil changes from 50A to 10A in 0.1 second. The self inductance of the coil is 20H. The induced e.m.f. in the coil is _____.

A. 800V

B. 6000V

C. 7000V

D. 8000V

Doubtly Asked 29 Oct 2026 Board exam · March 2024 hsc 12th Save WhatsApp Report

1 answer

Best answer

Answer: D. 8000V

Answer: (d) 8000V

\(|e| = L\dfrac{dI}{dt} = 20\times\dfrac{50 - 10}{0.1} = 20\times 400 = 8000\) V.

Doubtly AI · 29 Oct 2026 AI-generated · not yet verified Report

Was this answer helpful?

The current in a coil changes from 50A to 10A in 0.1 second. The self inductance of the coil is 20H. The induced e.m.f. in the coil is _____.

1 answer

Your answer