Physics Circle home Student Login

Home›Chapters›Electromagnetic Induction PYQs›Magnetic Flux & Faraday's Law›Question 53

NEET 2022 (Phase 2) · Magnetic Flux & Faraday's Law

Magnetic Flux & Faraday's Law question from NEET 2022 (Phase 2)

Q53NEET 2022 · PHASE 2Easy

Magnetic Flux & Faraday's Law

The magnetic flux linked to a circular coil of radius R is

ϕ=2t3+4t2+2t+5\phi = 2t^{3} + 4t^{2} + 2t + 5 Wb

The magnitude of induced emf in the coil at t = 5 s is

Show answer and solution

Answer: (a)

  1. ∣e∣=dϕdt=6t2+8t+2|e| = \frac{d\phi}{dt} = 6t^{2} + 8t + 2
  2. At t=5t = 5 s: ∣e∣=150+40+2=192|e| = 150 + 40 + 2 = 192 V
  3. So the answer is (a) 192 V.
Report a mistake

More questions on Magnetic Flux & Faraday's Law