A circular coil of radius 0.100 m contains a single turn and is located in a constant magnetic field of magnitude 0.320 T. The magnetic field has the same direction as the normal to the plane of the coil. The radius increases to 0.330 m in a time of 0.0900 s. (a) Determine the magnitude of the emf induced in the coil. (b) The coil has a resistance of 0.780 Ω. Find the magnitude of the induced current.
Added by Elisa G.
Step 1
100 \, \text{m} \) Radius final, \( r_2 = 0.330 \, \text{m} \) Magnetic field, \( B = 0.320 \, \text{T} \) Time, \( \Delta t = 0.0900 \, \text{s} \) Change in flux, \( \Delta \Phi = B \cdot \Delta A = B \cdot (\pi r_2^2 - \pi r_1^2) \) Show more…
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