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MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction
Try The MCQ's Test For ECAT Physics Chapter 15 Electromagnetic Induction
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Total Questions15
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Time Allowed20
ECAT Physics Chapter 15 Electromagnetic Induction
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Question # 1
The ratio of average e.m.f in the coil tot he time rate of change of current in the same coil is called
Question # 2
Step up transformer has a transformation ratio of 3:2. What is the voltage in secondary, if voltage in primary is 30V:
Question # 3
When there is no relative motion between the magnet and coil, the galvanometer indicates:
Question # 4
A coil of constant area is placed in a constant magnetic field. An include current is produced in the coil when:
Question # 5
The change of magnetic flux through a circuit will produce
Question # 6
When a conductor moved with its length parallel to the lines of magnetic fled:
Question # 7
Back emf is produced due to
Question # 8
The magnitude of induced emf depends upon the:
Question # 9
An emf is set up in a conductor when it
Question # 10
Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
Question # 11
Referring to above figure, current in the coil P grows from zero to its maximum value
Question # 12
The practical application of the phenomenon of Mutual induction is
Question # 13
A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when
Question # 14
When the conductor moved across a magnetic field:
Question # 15
In magnet-coil experiment, emf can be produced by
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M Muneeb ur Rehman 29 - Jun - 2026 03 Min 35 Sec 56/60 -
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B Bariha Asim 27 - Jun - 2024 04 Min 34 Sec 35/60
ECAT Physics Chapter 15 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | A coil of constant area is placed in a constant magnetic field. An induced current is produced in the coil when: |
A. The coil is distorted
B. The coil is rotated
C. The coil is neither distorted nor rotated
D. Both A and B
|
| 2 | In a coil current change from 2 to 4 A in .05 s. If the average induced emf is 8V then coefficient of self-inductance is: |
A. 0.2 henry
B. 0.1 henry
C. 0.8 henry
D. 0.04 henry
|
| 3 | What is the coefficient of mutual inductance, when the magnetic flux changes by 2 X 10-2Wb, and change in current is 0.01 A? |
A. 2 H
B. 3 H
C. 1/2 H
D. Zero
|
| 4 | When a conductor moved with its length parallel to the lines of magnetic fled: |
A. An emf is induced across its ends
B. Emf induced is similar to that of a battery
C. Emf passes through the conductor
D. Both A and B
|
| 5 | The practical application of the phenomenon of Mutual induction is |
A. Transformers
B. Generator
C. Motor
D. All of these
|
| 6 | The phenomenon of generation of induced emf is called |
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
|
| 7 | Which of the following is most suitable as the core of transformer |
A. Soft iron
B. Alinco
C. Steel
D. None of these
|
| 8 | The Phenomenon of generation of induced emf is called |
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
|
| 9 | An emf is set up in a conductor when it: |
A. is kept in a magnetic field
B. is kept in a electric field
C. Move across a magnetic field
D. Both (A) and (B)
|
| 10 | The law of electromagnetic induction is related to: |
A. Coulomb
B. Ampere
C. Faraday
D. Lenz
|
Test Questions
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