1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The current in a coil changes steadily from $$3 \mathrm{~A}$$ to $$5 \mathrm{~A}$$ in $$0.2 \mathrm{~s}$$ when an emf of $$2 \mu \mathrm{V}$$ is induced in it. The self-inductance of the coil is

A
0.2 mH
B
20 $$\mu H$$
C
2 $$\mu H$$
D
0.2 $$\mu H$$
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

COMEDK 2024 Evening Shift Physics - Semiconductor Devices and Logic Gates Question 11 English

The output of the given circuit is

A. Negatively rectified half wave

B. Positively rectified half wave

C. Negatively rectified full wave

D. Zero all times

A
B
B
D
C
A
D
C
3
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

For a paramagnetic material, the dependence of the magnetic susceptibility $$\chi$$ on the absolute temperature is given as

A
Independent of $$\mathrm{T}$$
B
$$ X \propto \frac{1}{T^2} $$
C
$$ X \propto T $$
D
$$ X \propto\frac{1}{T} $$
4
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The magnetic flux linked with a coil is given by the equation: $$\phi=8 t^2+t+10$$. The e.m.f. induced in the coil in the $$3^{\text {rd }}$$ second will be

A
49 V
B
33 V
C
16 V
D
20 V
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