MHT CET 2024 3rd May Evening Shift | Electromagnetic Induction Question 55 | Physics

A rod of length ' $l$ ' is rotated with angular velocity ' $\omega$ ' about its one end, perpendicular to a magnetic field of induction ' $B$ '. The e.m.f. induced in the rod is

$\mathrm{B} l^2 \omega$

$0.5 \mathrm{~B} l^2 \omega$

$B / \omega$

$0.5 \mathrm{~B} / \omega$

MHT CET 2024 3rd May Morning Shift

MCQ (Single Correct Answer)

-0

In an a. c. generator, when the plane of the coil is perpendicular to the magnetic field

magnetic flux is zero and induced e.m.f. is maximum.

magnetic flux is maximum and induced e.m.f. is zero.

both magnetic flux and induced e.m.f. are maximum.

both magnetic flux and induced e.m.f. are zero.

MHT CET 2024 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

An air cored coil has self inductance of 0.1 H . A soft iron core of relative permeability 1000 is introduced and the number of turns is reduced to $\left(\frac{1}{10}\right)^{\text {th }}$. The value of self inductance is now

0.1 H

1 mH

1 H

10 mH

MHT CET 2024 2nd May Evening Shift

MCQ (Single Correct Answer)

-0

The coil and magnet are moved in the same direction with same speed (V). The induced e.m.f. is

MHT CET 2024 2nd May Evening Shift Physics - Electromagnetic Induction Question 57 English

zero.

proportional to V.

proportional to $\mathrm{V}^{-1}$.

finite but does not depend on V.

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