Paragraph In space, magnetic field is everywhere ⊥ to plane of paper & directed away from the reader. The magnetic field is B = αx, α = 0.2 T/m. A rectangular loop of side 0.2 m and 0.3 m is in XY pla

Question

Paragraph In space, magnetic field is everywhere ⊥ to plane of paper & directed away from the reader. The magnetic field is B = αx, α = 0.2 T/m. A rectangular loop of side 0.2 m and 0.3 m is in XY plane and is being pulled with a constant speed of 10 m/s as shown. Resistance of loop is 0.8 Ω. The rate at which work is done by the external agent is ____ mW .

TestHub · Accepted Answer

P = i 2 R = 0.1 5 2 × 0.8 = 225 × 8 × 1 0 − 5 = 1.8 × 1 0 − 2 J = 18 mW

Physics - EMI/AC Question with Solution | TestHub

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