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

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 # 2

A current carrying conductor sets up its own:

Question # 3

The magnetic field in the middle of a solenoid due to current is

Question # 4

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 5

Flurescent screen is a screen where visible spot

Question # 6

Magnetic flux and flux density are related by

Question # 7

Avo-meter is used of measure the

Question # 8

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 # 9

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 10

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 11

The current is measured in

Question # 12

The SI unit of flux density is.

Question # 13

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 14

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

Question # 15

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

Question # 16

The pointer of a magnetic compass:

Question # 17

The SI unit of magnetic flux is.

Question # 18

A solenoid is a coil of wire which is:

Question # 19

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 # 20

A long wire wound tightly on a cylindrical core is called:

Question # 21

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 22

The strength of magnetic field around the current conductor is

Question # 23

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

Question # 24

In the formula B= µ̻ nl, the symbol n denotes:

Question # 25

The most suitable material for permanent magnet is

Question # 26

A beam of electrons is provided by an

Question # 27

When current passes through a solenoid coil, it behaves like a

Question # 28

The direction of lines of force depends upon the direction of

Question # 29

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

Question # 30

Which is modified form of galvanometer

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
2 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
3 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:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
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 magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
6 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
7 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
8 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
9 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
10 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these

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