Physics Circle home Student Login

Home›Chapters›Electromagnetic Induction PYQs›Magnetic Flux & Faraday's Law›Question 32

MHT CET 2024 (4 May, Shift 2) · Magnetic Flux & Faraday's Law

Magnetic Flux & Faraday's Law question from MHT CET 2024 (4 May, Shift 2)

Q32MHT CET 2024 · 4 MAY · SHIFT 2Easy

Magnetic Flux & Faraday's Law

A magnetic field of 2×10−2 T2 \times 10^{-2}\text{ T} acts at right angles to a coil of area 100 cm2100\text{ cm}^{2} with 50 turns, The average e.m.f. induced in the coil is 0.1 V, when it is removed from the field in time tt. The value of ' tt ' is (in second)

Show answer and solution

Answer: (a)

  1. e=NBAt⇒t=NBAee = \frac{NBA}{t} \Rightarrow t = \frac{NBA}{e}
  2. A=100A = 100 cm2=10−2^{2} = 10^{-2} m2^{2}
  3. t=50×2×10−2×10−20.1=0.010.1=0.1t = \frac{50\times 2\times 10^{-2}\times 10^{-2}}{0.1} = \frac{0.01}{0.1} = 0.1 s
  4. So the answer is (a) 0.1 s.
Report a mistake

More questions on Magnetic Flux & Faraday's Law