Student Login

Home›Chapters›Electromagnetic Induction PYQs›Magnetic Flux & Faraday's Law›Question 24

MHT CET 2025 (26 Apr, Shift 1) · Magnetic Flux & Faraday's Law

Magnetic Flux & Faraday's Law question from MHT CET 2025 (26 Apr, Shift 1)

Q24MHT CET 2025 · 26 APR · SHIFT 1Easy

Magnetic Flux & Faraday's Law

A magnetic field $4 \times 10^{-2}\text{ T}$ acts at right angles to a coil of area $100\text{ cm}^{2}$ with 50 turns. The average e.m.f. induced in the coil is 0.1 V, when it is removed from the field in time ' $t$ '. The value of ' $t$ ' is

Show answer and solution

Answer: (c)

Removing the coil takes flux from $NBA$ to $0$ : $e = \frac{NBA}{t}$ .
$t = \frac{NBA}{e} = \frac{50\times 4\times 10^{-2}\times 10^{-2}}{0.1}$
$t = \frac{0.02}{0.1} = 0.2$ s
So the answer is (c) 0.2 second.

Report a mistake

More questions on Magnetic Flux & Faraday's Law

A coil having ' N ' turns and resistance ' R ' Ω is connected to a galvanometer of…MHT CET 2025 (5 May, Shift 2)
A coil of ' n ' turns and resistance RΩ is connected in series with a resistance R/2. The…MHT CET 2025 (25 Apr, Shift 2)
A coil of n turns and resistance RΩ is connected in series with resistance R/4. The…MHT CET 2025 (23 Apr, Shift 2)
A coil of resistance 400 Ω is placed in a magnetic field. If the magnetic flux ' φ ' (…MHT CET 2025 (22 Apr, Shift 1)
The total charge induced in a conducting loop when it is moved in a uniform magnetic…MHT CET 2025 (22 Apr, Shift 1)
The magnetic flux through a coil is 4 × 10⁻⁴ Wb at time t = 0. It reduces to 30% of its…MHT CET 2025 (19 Apr, Shift 2)
A coil of ' n ' turns and area ' A ' is suddenly removed from a magnetic field, a charge…MHT CET 2025 (23 Apr, Shift 2)
A magnetic field of 2 × 10⁻² T acts at right angles to a coil of area 100 cm² with 50…MHT CET 2024 (4 May, Shift 2)