MHT CET 2026 20th April Morning Shift | Electromagnetic Induction Question 4 | Physics

A coil of effective area $3$ m$^2$ is placed at right angles to a magnetic field of induction $0.05$ Wb/m$^2$. If the field is decreased to $20\%$ of its original value in $10$ second, the e.m.f. induced in the coil will be

$15$ mV

$12$ mV

$10$ mV

$5$ mV

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

Two inductors of 80 mH each are joined in parallel. The current passing through the combination is 2.1 A . The energy stored in this combination of inductors is

$4.84 \times 10^{-2} \mathrm{~J}$

$7.26 \times 10^{-2} \mathrm{~J}$

$8.82 \times 10^{-2} \mathrm{~J}$

$10.85 \times 10^{-2} \mathrm{~J}$

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

A coil of effective area $3 \mathrm{~m}^2$ is placed at right angles to a magnetic field of induction $0.05 \mathrm{~Wb} / \mathrm{m}^2$ If the field is decreased to $20 \%$ of its original value in 10 second, the e.m.f. induced in the coil will be

10 mV

12 mV

15 mV

20 mV

MHT CET 2025 5th May Evening Shift

MCQ (Single Correct Answer)

-0

A coil having ' $N$ ' turns and resistance ' $R$ ' $\Omega$ is connected to a galvanometer of resistance ' 6 R ' $\Omega$. The magnetic flux linked with this coil changes from $\phi_1$ weber to $\phi_2$ weber in time ' t ' second. The induced current in the circuit is

$\frac{\mathrm{N}\left(\phi_2-\phi_1\right)}{\mathrm{t}}$

$\frac{N\left(\phi_2-\phi_1\right)}{7 R t}$

$\frac{\mathrm{N}\left(\phi_2-\phi_1\right)}{\mathrm{Rt}}$

$\frac{N\left(\phi_2-\phi_1\right)}{6 R t}$

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