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

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 2

The unit of flux density is also given by

Question # 3

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 # 4

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

Question # 5

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

Question # 6

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

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

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

Question # 9

F = I(L x B) is a

Question # 10

Tesla is the unit of

Question # 11

The CRO is used for displaying the waveform of a given

Question # 12

Magnetic induction is also called as:

Question # 13

Magnetic lines of force:

Question # 14

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 15

The sources of magnetic field are

Question # 16

Centripetal force for electron is given by

Question # 17

Lorentz force is defined as

Question # 18

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 # 19

A field is uniform and much stronger:

Question # 20

For the conversion of galvanometer into voltmeter, we connect a

Question # 21

Ammeter is used to measure

Question # 22

Resistance is measured in

Question # 23

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

Question # 24

Current is measured in

Question # 25

The field around a moving charge is called

Question # 26

The SI unit of flux density is.

Question # 27

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 28

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 # 29

Amperean path is a:

Question # 30

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
2 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
3 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
4 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
5 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
6 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
7 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
8 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
9 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
10 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance

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