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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 magnitude of induced emf depends upon the:
Question # 2
The current produced by moving a loop of wire across a magnetic field is called:
Question # 3
Micheal Faraday and joseph Henry belong respectively to:
Question # 4
Lenz's law is the consequence of
Question # 5
Lens's law deals with the
Question # 6
The rate change of area expressed is expressed in:
Question # 7
A square loop of wire is moving through a uniform magnetic field. The normal to the loop is oriented parallel to the magnetic field. The emf induced in the loop is:
Question # 8
Transformer is used to
Question # 9
Referring to above figure, current in the coil P grows from zero to its maximum value
Question # 10
The SI unit of magnetic induction is
Question # 11
An induced current can be produced by:
Question # 12
In magnet-coil experiment, emf can be produced by:
Question # 13
When the conductor moved across a magnetic field:
Question # 14
When a conductor moved with its length parallel to the lines of magnetic fled:
Question # 15
The Phenomenon of generation of induced emf is called
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ECAT Physics Chapter 15 Important MCQ's
| Sr.# | Question | Answer |
|---|---|---|
| 1 | The current produced by moving a loop of a wire across a magnetic field is called: |
A. Direct current
B. Magnetic current
C. Alternating current
D. Induced current
|
| 2 | Split rings act as |
A. Vibrator
B. Resistor
C. Motor
D. Commulator
|
| 3 | Referring to above figure, current in coil P falls from its maximum value to zero: |
A. At the instant the switch is closed
B. At the instant the switch is opened
C. When switch is kept open
D. When switch is kept closed
|
| 4 | The direction of induced current is always so as to oppose the cause which produces it. This is |
A. Lenz's law
B. Ampere's law
C. Faraday's law
D. Coulomb's law
|
| 5 |
An
induced current can be produced by: |
A. Constant magnetic field
B. Changing magnetic field
C. Varying magnetic field
D. Constant electric field
|
| 6 |
Plan of a coil makes an angle of 20º with the lines of magnetic field. The angle between B and vector area of plane of coil is: |
A. Also 20º
B. 70º
C. 90º
D. 180º
|
| 7 | Micheal Faraday and joseph Henry belong respectively to: |
A. USA and England
B. England and France
C. England and USA
D. USA and France
|
| 8 | The phenomenon of generation of induced emf is called |
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
|
| 9 | Back emf is produced due to |
A. Self induction
B. Mutual induction
C. A.C
D. Lenz's law
|
| 10 | When a conductoris moved across a magnetic field: |
A. Emf induced its similar to that of a battery
B. Emf induced gives rise to induced current
C. An emf is induced across its ends
D. All are correct
|
Test Questions
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