1
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A circular coil of resistance ' $R$ ', area ' $A$ ', number of turns ' N ' is rotated about its vertical diameter with angular speed ' $\omega$ ' in a uniform magnetic field of magnitude ' $B$ '. The average power dissipated in a complete cycle is

A
$\frac{\mathrm{N}^2 \mathrm{~A}^2 \mathrm{~B}^2 \omega^2}{2 \mathrm{R}}$
B
$\frac{\mathrm{BNA} \omega}{\mathrm{R}}$
C
$\frac{\mathrm{BNA} \omega}{2 \mathrm{R}}$
D
$\frac{N^2 A^2 B^2 \omega^2}{R}$
2
MHT CET 2024 16th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil is wound on a core of rectangular crosssection. If all the linear dimensions of the core are increased by a factor 2 and number of turns per unit length of coil remains same, the self inductance increases by a factor of (Assume, permeability is same)

A
16
B
8
C
4
D
2
3
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

A graph of magnetic flux $(\phi)$ versus current (I) is shown for 4 different inductors $\mathrm{P}, \mathrm{Q}, \mathrm{R}, \mathrm{S}$. Minimum value of inductance is for inductor

MHT CET 2024 16th May Morning Shift Physics - Electromagnetic Induction Question 25 English

A
P
B
Q
C
R
D
S
4
MHT CET 2024 16th May Morning Shift
MCQ (Single Correct Answer)
+1
-0

The mutual inductance of two coils is 45 mH . The self-inductance of the coils are $\mathrm{L}_1=75 \mathrm{mH}$ and $\mathrm{L}_2=48 \mathrm{mH}$. The coefficient of coupling between the two coils is

A
0.3
B
0.4
C
0.75
D
1.0
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