1
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two coils are kept near each other. When no current passess through first coil and current in the $2^{\text {nd }}$ coil increases at the rate $10 \mathrm{~A} / \mathrm{s}$, the e.m.f. in the $1^{\mathbb{P}}$ coil is 20 mV . When no current passes through $2^{\text {nd }}$ coil and 3.6 A current passes through $1^2$ coil the flux linkage in coil 2 is

A
$1.2 \times 10^{-3} \mathrm{~Wb}$
B
$1.8 \times 10^{-3} \mathrm{~Wb}$
C
$3.6 \times 10^{-3} \mathrm{~Wb}$
D
$7.2 \times 10^{-3} \mathrm{~Wb}$
2
MHT CET 2024 3rd May Evening Shift
MCQ (Single Correct Answer)
+1
-0

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

A
$\mathrm{B} l^2 \omega$
B
$0.5 \mathrm{~B} l^2 \omega$
C
$B / \omega$
D
$0.5 \mathrm{~B} / \omega$
3
MHT CET 2024 3rd May Morning Shift
MCQ (Single Correct Answer)
+1
-0

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

A
magnetic flux is zero and induced e.m.f. is maximum.
B
magnetic flux is maximum and induced e.m.f. is zero.
C
both magnetic flux and induced e.m.f. are maximum.
D
both magnetic flux and induced e.m.f. are zero.
4
MHT CET 2024 2nd May Evening Shift
MCQ (Single Correct Answer)
+1
-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

A
0.1 H
B
1 mH
C
1 H
D
10 mH
MHT CET Subjects
EXAM MAP