The flux through a coil changes from 4 × 10^-5 Wb to 5 × 10^-5 Wb in 0.1 s. What emf is induced in this coil? A) 3 × 10^-4 V B) 5 × 10^-4 V C) 7 × 10^-4 V D) 1 × 10^-4 V E) 4 × 10^-4 V

Question

Quizplus · Accepted Answer

The induced emf (ε) is calculated using Faraday's law: ε = -ΔΦ/Δt. Here, ΔΦ = (5 - 4) × 10^-5 Wb = 1 × 10^-5 Wb and Δt = 0.1 s. Thus, ε = -(1 × 10^-5 Wb) / 0.1 s = -1 × 10^-4 V. The magnitude is 1 × 10^-4 V.

The Flux Through a Coil Changes from 4 × 10-5

The Flux Through a Coil Changes from 4 × 10^-5