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The magnetic flux through a coil containing 50 loops changes from 30 Wb to –30 Wb in 0.42 seconds. What is the voltage induced in the coil?
in Physics & Chemistry by Platinum (124,048 points)
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From Faraday's Law, the emf, ε , induced around a single loop of conductor is proportional to the rate of change of the magnetic flux, Φ, through the area, A , of the loop.

ε = -N . (ΔΦ / Δt)

ε = -50 . (-30 - 30) / 0.42

= 7142.85..

Therefore Induced voltage = ε = 7143 V
by Diamond (48,544 points)
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