%253Cp%253E%253Cspan%2520class%253D%2522c1%2522%253EA%2520square%2520coil%2520of
ID: 3897672 • Letter: #
Question
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a) average induced emf is V = N*A*dB/dt
which can be approximated to V = N*A*B/t
V = 30*(0.022m)^2 * 2.25T / 0.335s
V = 0.0975V = 97.5 mV
(b) average induced current in coil is i = V / R
i = 0.0975V / 0.78 ohm = 0.125A = 125 mA
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