ECAT Pre Engineering Physics Chapter 15 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Physics ECAT Pre Engineering Chapter 15 Electromagnetic Induction

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Question # 1

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:

Question # 2

The current produced by moving a loop of wire across a magnetic field is called

Question # 3

The work is stored in the inductor as

Question # 4

Transformer is used to

Question # 5

An induced current can be produced by:

Question # 6

Lens's law deals with the

Question # 7

A device which converts Electrical energy into mechanical energy is called as

Question # 8

When there is no relative motion between the magnet and coil, the galvanometer indicated

Question # 9

When the conductor moved across a magnetic field:

Question # 10

The motional e.m.f depends upon the

Question # 11

The Phenomenon of generation of induced emf is called

Question # 12

Referring to above figure, current in coil P falls from its maximum value to zero

Question # 13

Referring to above figure, due to change in current in the coil P, the change in magnetic flux

Question # 14

The induced current in the loop can be Increased by

Question # 15

The product of induced current and the resistance of the wire through which the current is passing is called:

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ECAT Physics Chapter 15 Important MCQ's

Sr.# Question Answer
1 The induced current in the loop can be Increased by
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
2 Faraday's law of electromagnetic induction has been used in the construction of:
A. Galvanometer
B. Voltmeter
C. Electric motor
D. Electric genrator
3 The phenomenon of generation of induced emf is called
A. Electrostatic induction
B. Magnetic induction
C. Electromagnetic induction
D. Electric induction
4 The magnitude of induced emf depends upon the:
A. Rate of decrease of magnetic field
B. Rate of change of magnetic field
C. Rate of increase of magnetic flux
D. Constancy of magnetic field
5 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
6 Self inducede e.m.f. is also called
A. Motional e.m.f.
B. Thermistor
C. Electrostatic induction
D. Back e.m.f
7 Instead of moving the coil towards a magnet, the magnet is moved towards the coil with the same speed. The galvanometer shows current:
A. Of same magnitude in the same direction
B. Of different magnitude in the same direction
C. Of same magnitude but in opposite direction
D. Of different magnitude in the opposite direction
8 The induced current in the loop can be increased by:
A. Using a stronger magnetic field
B. Moving the loop faster
C. Replacing the loop by a coil of many turns
D. All above
9 Which of the following is most suitable as the core of transformer
A. Soft iron
B. Alinco
C. Steel
D. None of these
10 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:
A. Zero
B. Of smaller magnitude
C. Of larger magnitude
D. Sometimes B, sometimes C

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