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

Weber is a unit of

Question # 3

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 4

F = I(L x B) is a

Question # 5

The unit of magnetic flux is

Question # 6

Method "lamp and scale arrangement" used to measure the

Question # 7

In a moving coil galvanometer, the deflecting couple depends upon

Question # 8

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 9

The direction of lines of force depends upon the direction of

Question # 10

The force acting on a charge moving in a magnetic field

Question # 11

Ammeter is used to measure

Question # 12

The CRO is used for displaying the waveform of a given

Question # 13

Resistance is measured in

Question # 14

Flurescent screen is a screen where visible spot

Question # 15

Galvanometer is a device used for the detection of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
2 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
3 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
4 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
5 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
6 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
7 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
8 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
9 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
10 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

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