The flux linkages, in a coil having 50 turns, changes from 0 to 20 webers in 5 secs of time. Calculate the induced emf in the coil.
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Change n in magnetic flux Δϕ=1−10=−9 Weber
Time taken Δt=0.1 sec
So, emf induced in the coil E=− ΔtΔϕ
⟹ E=−
0.1
(−9)
=90 Volts
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