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

In the region surrounding a current carrying wire:

Question # 2

Amperean path is a:

Question # 3

How many number of anodes used in electron gun

Question # 4

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

Question # 5

A galvanometer is an instrument used to

Question # 6

The SI unit of flux density is

Question # 7

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

Question # 8

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

Question # 9

To convert galvanometer into ammeter we connect

Question # 10

Avo-meter is used of measure the

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Method "lamp and scale arrangement" used to measure the

Question # 17

Resistance is measured in

Question # 18

A solenoid is a coil of wire which is:

Question # 19

The unit of flux density is also given by

Question # 20

The SI unit of flux density is.

Question # 21

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 # 22

The direction of lines of force depends upon the direction of

Question # 23

F = I(L x B) is a

Question # 24

Galvanometer is a device used for the detection of

Question # 25

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

Question # 26

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 27

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

Question # 28

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 29

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

Question # 30

The sources of magnetic field are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
2 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
3 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
4 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
5 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
6 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
7 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
8 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
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 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN

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