Given magnetic flux in terms of time, ϕ=5t2+3t+60, and we know that from Faraday's law of electromagnetic induction, rate of change of flux is directly related to induced EMF of the coil,
⇒∣ϵ∣=∣dtdϕ∣=10t+3
At t=4s, ∣ϵ∣=40+3=43V
The magnetic flux linked with a coil (in Wb) is given by the equation ϕ=5t2+3t+16. The magnitude of induced emf in the coil at the fourth second will be:
Held on 30 Apr 2020 · Verified 9 Jul 2026.
33V
43V
108V
10V
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