Physics

Am i Correct?

2.0 cm*.044T*/.10 s= 0.88 V

Each side of a square loop of wire measures 2.0 cm. A magnetic field of 0.044 T perpendicular to the loop changes to zero in 0.10 s. What average emf is induced in the coil during this change?

A. 1.8 V

B. 0.088 V

C. 0.88 V <--

D. 0.00018 V

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  1. area of loop = .02^2 = .0004 m^2
    dB/dt = .044/.1 = .44
    emf = A dB/dt = .0004 *.44 = 1.76 * 10^-4 = .00018 V

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    posted by Damon

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