1
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
When a current $i$ through a solenoid is increasing at a constant rate, then the induced current is
A
constant and it will be in the direction of $i$
B
constant and it will be in a direction opposite to the $i$
C
increased with time and it will be in the direction of $i$
D
increased with time and opposite to the direction of $i$
2
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
In a pair of adjacent coils, if the current in one coil changes from 10 A to 2 A in a time 0.2 s , an emf of 120 V is induced in another coil. The mutual inductance of the pair of the coils is
A
2 H
B
3 H
C
6 H
D
9 H
3
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
The power factor of an AC circuit containing peak current 2 A and peak voltage 1 V is $1 / 2$, then the angle between voltage and current is
A
$30^{\circ}$
B
$45^{\circ}$
C
$90^{\circ}$
D
$60^{\circ}$
4
TS EAMCET 2023 (Online) 12th May Morning Shift
MCQ (Single Correct Answer)
+1
-0
If a plane electromagnetic wave has electric field oscillations of frequency 3 GHz , then the wavelength of the wave is (speed of light in vacuum $=3 \times 10^8 \mathrm{~ms}^{-1}$ )
A
0.1 m
B
0.2 m
C
100 m
D
0.003 m
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