The flux through a coil changes from 4.0 × 10^-⁵ Wb to 5.0 × 10^-⁵ Wb in 0.10 s. What emf is induced in this coil?

Question

Quizplus · Accepted Answer

The induced emf (ε) can be calculated using Faraday's law of electromagnetic induction: ε = -ΔΦ/Δt. Here, ΔΦ = 5.0 × 10^-5 Wb - 4.0 × 10^-5 Wb = 1.0 × 10^-5 Wb and Δt = 0.10 s. Thus, ε = -(1.0 × 10^-5 Wb) / 0.10 s = -1.0 × 10^-4 V. The negative sign indicates the direction of the induced emf, but the magnitude is 1.0 × 10^-4 V.

The Flux Through a Coil Changes from 4