1
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
2
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 $$\Omega$$
3
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
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The emf of a cell having internal resistance $$1 \Omega$$ is balanced against a length of $$330 \mathrm{~cm}$$ on a potentiometer wire. When an external resistance of $$2 \Omega$$ is connected across the cell, the balancing length will be :

A
220 cm
B
330 cm
C
115 cm
D
332 cm
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