ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

For the conversion of galvanometer into voltmeter, we connect a

Question # 2

The force experienced by charged particle is maximum, if it moves

Question # 3

The SI unit of flux density is

Question # 4

NmA-1 is commonly called:

Question # 5

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 6

A solenoid is a coil of wire which is:

Question # 7

The force acting on a charge moving in a magnetic field

Question # 8

Strength of magnetic field is measured in SI units, in:

Question # 9

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

Question # 10

Centripetal force for electron is given by

Question # 11

The permeability of free space is measured in:

Question # 12

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 13

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 # 14

Amperean path is a:

Question # 15

The pointer of a magnetic compass:

Question # 16

The direction of lines of force depends upon the direction of

Question # 17

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:

Question # 18

Magnetic lines of force:

Question # 19

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 # 20

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

Question # 21

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 22

The vector representation of force experience give the direction of

Question # 23

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

Question # 24

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

Question # 25

A resistance used in galvanometer to make it voltmeter is called

Question # 26

Electron gun consist of

Question # 27

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 28

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 29

A charged particle moving at right angle to the magnetic field will experience

Question # 30

Which one of the following relations is correct?

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
2 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
3 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
4 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
5 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
6 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
7 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
8 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
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:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
10 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid

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