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

If $\chi$ is the susceptibility and $\mu_r$ is the relative permeability of a ferromagnetic substance, then

A

$x \ll 1$

B

$\mu_r \ll 1$

C

$\mu_r=0$

D

$x \gg 1$

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

Metal detector works on the principle of

A

Ohm's law

B

Coulomb's law

C

Electromagnetic induction

D

Stefan's law of radiation

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

A copper disc of radius 0.1 m rotates about an axis passing through its centre and perpendicular to its plane with 10 revolutions per second in a uniform transverse magnetic field of 0.1 T . The emf induced across the radius of the disc is

A

$\frac{\pi}{10} \mathrm{~V}$

B

$\frac{2 \pi}{10} \mathrm{~V}$

C

$10 \pi \mathrm{mV}$

D

$20 \pi \mathrm{mV}$

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

At very high frequencies, the current ( $i$ ) in the given circuit is

TS EAMCET 2023 (Online) 14th May Morning Shift Physics - Alternating Current Question 12 English
A

4 A

B

0.4 A

C

44 A

D

4.4 A

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