1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

To produce an instantaneous displacement current of $$2 \mathrm{~mA}$$ in the space between the parallel plates of a capacitor of capacitance $$4 ~\mu \mathrm{F}$$, the rate of change of applied variable potential difference $$\left(\frac{\mathrm{dV}}{\mathrm{dt}}\right)$$ must be :-

A
$$800 \mathrm{~V} / \mathrm{s}$$
B
$$500 \mathrm{~V} / \mathrm{s}$$
C
$$200 \mathrm{~V} / \mathrm{s}$$
D
$$400 \mathrm{~V} / \mathrm{s}$$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

An emf is generated by an ac generator having 100 turn coil, of loop area $$1 \mathrm{~m}^2$$. The coil rotates at a speed of one revolution per second and placed in a uniform magnetic field of $$0.05 \mathrm{~T}$$ perpendicular to the axis of rotation of the coil. The maximum value of emf is :-

A
3.14 V
B
31.4 V
C
62.8 V
D
6.28 V
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

For very high frequencies, the effective impedance of the circuit (shown in the figure) will be:-

NEET 2023 Manipur Physics - Alternating Current Question 9 English

A
4 $$\Omega$$
B
6 $$\Omega$$
C
1 $$\Omega$$
D
3 $$\Omega$$
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

A constant torque of $$100 \mathrm{~N} \mathrm{~m}$$ turns a wheel of moment of inertia $$300 \mathrm{~kg} \mathrm{~m}^2$$ about an axis passing through its centre. Starting from rest, its angular velocity after $$3 \mathrm{~s}$$ is :-

A
1 rad/s
B
5 rad/s
C
10 rad/s
D
15 rad/s
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