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

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 2

It is customary represent a current flowing towards the reader by a symbol

Question # 3

The SI unit of magnetic flux is

Question # 4

Ammeter is used to measure

Question # 5

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 6

Centripetal force for electron is given by

Question # 7

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

Question # 8

Weber is a unit of

Question # 9

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 10

The magnetic field inside a solenoid can be increased by:

Question # 11

The current sensitivity of the galvanometer is

Question # 12

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 13

The direction of lines of force depends upon the direction of

Question # 14

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

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 angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
2 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
3 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
4 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
5 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
6 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
7 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
8 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
9 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
10 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

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