A flat coil of wire consisting of 20 turns,each with an area of 50 cm²,is positioned perpendicularly to a uniform magnetic field that increases its magnitude at a constant rate from 2.0 T to 6.0 T in 2.0 s.If the coil has a total resistance of 0.40 $\Omega$,what is the magnitude of the induced current? A)0.70 A B)0.60 A C)0.50 A D)0.80 A E)0.20 A

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Quizplus · Accepted Answer

The induced emf (ε) is given by Faraday's law: ε = -N * (ΔΦ/Δt), where N is the number of turns, and ΔΦ is the change in magnetic flux. ΔΦ = A * ΔB, where A is the area and ΔB is the change in magnetic field. The induced current (I) is ε/R. Calculating gives I = 0.50 A.

A Flat Coil of Wire Consisting of 20 Turns,each with an Area