ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The magnetic field in the middle of a solenoid due to current is

Question # 2

The SI unit of magnetic induction is tesla which is equal to

Question # 3

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 4

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 5

Which one of the following relations is correct?

Question # 6

The unit of flux density is also given by

Question # 7

The most suitable material for permanent magnet is

Question # 8

A galvanometer is an instrument used to

Question # 9

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 10

A field is uniform and much stronger:

Question # 11

In the formula B= µ̻ nl, the symbol n denotes:

Question # 12

Flurescent screen is a screen where visible spot

Question # 13

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 14

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 15

For the conversion of galvanometer into voltmeter, we connect a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
2

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
3 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
4 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
5 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
6 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
7 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
8 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
9 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
10 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium

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