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 strength of magnetic field around the current conductor is

Question # 2

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

Question # 3

To convert galvanometer into ammeter we connect

Question # 4

The SI unit of magnetic induction is

Question # 5

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 # 6

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

Question # 7

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

Question # 8

The sources of magnetic field are

Question # 9

The field around a moving charge is called

Question # 10

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

Question # 11

Centripetal force for electron is given by

Question # 12

The magnetic field inside a solenoid can be increased by:

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

The vector representation of force experience give the direction of

Question # 17

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

Question # 18

It is customary represent a current flowing towards the reader by a symbol

Question # 19

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

Question # 20

Current is measured in

Question # 21

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

Question # 22

The angle of deflection of coil can be measured by the

Question # 23

A solenoid is a coil of wire which is:

Question # 24

The SI unit of flux density is

Question # 25

NmA-1 is commonly called:

Question # 26

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

Question # 27

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

Question # 28

The CRO is used for displaying the waveform of a given

Question # 29

A resistance used in galvanometer to make it voltmeter is called

Question # 30

F = I(L x B) is a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
2 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
3 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
4 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
5 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
6 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
7 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
8 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
9 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
10 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these

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