An induced current of 2 A flows through a coil. The resistance of the coil is 10 Ω. What is the change in magnetic flux associated with a coil in 1 ms? (a) 2 × 10⁻³ wb (b) 2 × 10⁻² wb (c) 22 × 10⁻² wb (d) 22 × 10⁻⁴ wb

Answer: (b). I = e/R = (Δφ)/(RΔ t) ⇒ Δφ = IRΔ t Δφ = 2 × 10 × 10⁻³ = 2 × 10⁻² Wb So the answer is (b) 2 × 10⁻² Wb.

An induced current of 2 A flows through a coil. The resistance of the… | MHT CET 2026 (12 May, Shift 2)

Q10MHT CET 2026 · 12 MAY · SHIFT 2Easy

Magnetic Flux & Faraday's Law

An induced current of $2$ A flows through a coil. The resistance of the coil is $10\ \Omega$ . What is the change in magnetic flux associated with a coil in $1$ ms?

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Answer: (b)

$I = \frac{e}{R} = \frac{\Delta\phi}{R\Delta t} \Rightarrow \Delta\phi = IR\Delta t$
$\Delta\phi = 2 \times 10 \times 10^{-3} = 2 \times 10^{-2}$ Wb
So the answer is (b) $2 \times 10^{-2}$ Wb.

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