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 straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 2

Which is modified form of galvanometer

Question # 3

Magnetic lines of force:

Question # 4

The unit of magnetic flux is

Question # 5

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 6

The vector representation of force experience give the direction of

Question # 7

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 8

A solenoid is a coil of wire which is:

Question # 9

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 10

The CRO is used for displaying the waveform of a given

Question # 11

Centripetal force for electron is given by

Question # 12

Ammeter is used to measure

Question # 13

The most suitable material for permanent magnet is

Question # 14

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 15

A voltmeter is used to measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 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
4 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
5 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
6 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
7 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
8 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
9 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
10 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform

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