1
TS EAMCET 2023 (Online) 12th May Evening Shift
MCQ (Single Correct Answer)
+1
-0

A boy is playing with the empty rim of a cycle wheel of radius 40 cm by rolling it along a horizontal road towards north with angular speed of $20 \mathrm{rad} \mathrm{s}^{-1}$. Considering the effect of magnetic field of earth, the e.m.f induced in the rim is

(Horizontal component of earth's magnetic field $=0.26 \mathrm{G}$ )

A
zero
B
$2 \mu \mathrm{~V}$
C
2.4 mV
D
3 V
2
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 $i$
3
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
TS EAMCET Subjects
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