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

Galvanometer is a device used for the detection of

Question # 2

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 3

The SI unit of flux density is.

Question # 4

Which one of the following relations is correct?

Question # 5

Ammeter is used to measure

Question # 6

A resistance used in galvanometer to make it voltmeter is called

Question # 7

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 # 8

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 9

Magnetic flux and flux density are related by

Question # 10

In the expression of force experienced by electron, the direction of both v and B are

Question # 11

The magnetic field outside the solenoid due to current is

Question # 12

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

Question # 13

The SI unit of magnetic induction is

Question # 14

The voltage increases linearly with

Question # 15

The SI unit of magnetic flux is

Question # 16

The direction of lines of force depends upon the direction of

Question # 17

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

Question # 18

A current carrying conductor sets up its own:

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

The current sensitivity of the galvanometer is

Question # 24

The SI unit of flux density is

Question # 25

The force acting on a charge moving in a magnetic field

Question # 26

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 27

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 28

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 29

Lorentz force is defined as

Question # 30

In the region surrounding a current carrying wire:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 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
4 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
5 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
6 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
7 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
9 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
10 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

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