A square loop PQRS having 10 turns, area 3.6 × 10–3 m2 and resistance 100 Ω is slowly and uniformly being pulled out of a uniform magnetic field of magnitude B = 0.5 T as shown. Work done in pulling the loop out of the field in 1.0 s is _______

Engineering

Physics

Magnetic Flux and Faraday Law and Lenz Law

Question

A square loop PQRS having 10 turns, area 3.6 × 10^–3 m² and resistance 100 Ω is slowly and uniformly being pulled out of a uniform magnetic field of magnitude B = 0.5 T as shown. Work done in pulling the loop out of the field in 1.0 s is ________ × 10^–6 J.

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Side of the square = 6 cm

V = 6 cm/s

$i = \frac{NBvl}{R}$

work done = i²Rt

$= \frac{(NBvl)^{2} \times t}{R}$

$= \frac{(10 \times 0.5 \times 0.06 \times 0.06)^{2} \times 1}{100} = 3 \times 10^{- 6} J$