1
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A current carrying loop is placed in a uniform magnetic field $B$ in different orientations I, II, III and IV as shown in the figure. The correct order of decreasing potential energy is

( $\hat{\mathbf{n}}=$ unit vector normal to the plane of the loop)TS EAMCET 2023 (Online) 14th May Evening Shift Physics - Moving Charges and Magnetism Question 27 English 1TS EAMCET 2023 (Online) 14th May Evening Shift Physics - Moving Charges and Magnetism Question 27 English 2

A

I, III, II, IV

B

I, I I, I I I, I V

C

I, IV, II, III

D

III, IV, I, II

2
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A bar magnet of magnetic moment $2 \mathrm{~A}-\mathrm{m}^2$ lies aligned with the direction of a uniform magnetic field of 0.3 T . The amount of work required by an external torque to turn the magnet so as to align its magnetic moment normal to the field direction is

A

0.15 J

B

0.3 J

C

0.6 J

D

1.2 J

3
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A conducting rod is moving towards right with a velocity $v$ in a uniform magnetic field $B$. If the direction of induced current $i$ is as shown in the figure, then the direction of $B$ is

TS EAMCET 2023 (Online) 14th May Evening Shift Physics - Electromagnetic Induction Question 12 English

A

in the plane of the paper towards right

B

in the plane of the paper towards left

C

perpendicular to the plane of the paper and into the paper

D

perpendicular to the plane of the paper and out of the paper

4
TS EAMCET 2023 (Online) 14th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A coil has a resistance of $30 \Omega$ and an inductive reactance of $20 \Omega$ at 50 Hz frequency. If an AC source of $200 \mathrm{~V}, 100 \mathrm{~Hz}$ is connected across the coil, the current in the coil is

A

$2 A$

B

$\frac{20}{\sqrt{13}} \mathrm{~A}$

C

4 A

D

8 A

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