CUET-UG SERIES Physics
Electromagnetic Field Emf
5 previous year questions.
Volume: 5 Ques
Yield: Medium
High-Yield Trend
2
2023 3
2022 Chapter Questions 5 MCQs
01
PYQ 2022
medium
physics ID: cuet-ug-
Suppose K is open and the rod is moved with speed of 12 cms-1 in the direction. The magnitude of the induced EMF will be :
1
4.5✕10^-3 V
2
9.0✕10^-3 V
3
18.0✕10^-3 V
4
27.0✕10^-3 V
02
PYQ 2022
easy
physics ID: cuet-ug-
A potentiometer with a cell of 2.4 volts and internal resistance of 2 Ω maintains potential drop across the resistance wire AB of length 2 m and resistance 10 Ω. A standard cell that maintains a constant EMF of ‘V’ volt with an internal resistance of 0.2 gives a balance point at 1.6 M length of the wire. The value of EMF of the second (standard) cell(V) is:
1
2.0 volt
2
1.9 volt
3
1.8 volt
4
1.6 volt
03
PYQ 2022
medium
physics ID: cuet-ug-
The induced EMF produced in the moving rod if the magnetic field becomes parallel to the rails instead of becoming perpendicular will be :
1
3✕10^-3V
2
6✕10^-3V
3
9✕10^-3V
4
Zero
04
PYQ 2023
medium
physics ID: cuet-ug-
The statement that is NOT true about induced emf is:
1
The induced emf lasts so long as the change in magnetic flux continues
2
The direction of induced emf is given by Lenz's law
3
Whenever the amount of magnetic flux linked with a circuit changes, an emf is induced in the circuit
4
Larger the amount of magnetic flux linked with a circuit greater is the emf induced in it
05
PYQ 2023
medium
physics ID: cuet-ug-
An emf of 0.5 V is developed in the secondary coil, when current in primary coil changes from 5.0 A to 2.0 A in 300 milliseconds. The mutual inductance of two coils would be:
1
0.02 H
2
0.03 H
3
0.01 H
4
0.05 H