ECAT Pre General Science Chapter 14 online mcq test with answers for Physics chapter 14 (Electromagnetism)

Question # 1

Tesla is the unit of

Magnetic induction or flux density A
Magnetic flux B
Self inductance C
None of these D

Question # 2

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

right hand rule A
left hand rule B
head to tall rule C
none of these D

Question # 3

The SI unit of flux density is.

Tesla A
Weber B
Gaun C
Weber/meter D

Question # 4

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

F=e(V x B) A
F= -e(V x B) B
F= e(B x V) C
Both a and c D

Question # 5

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

G 10^-3T A
G = 10^-2T B
G = 10^-4T C
G = 10^-1T D

Question # 6

The SI unit of magnetic permeability is

WB A^-1m^-1 A
WB mA^-1 B
WB Am^-1 C
None of these D

Question # 7

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

e/m = 2V/Br² A
e/m = 2V/B²r B
e/m = 2V/B²r² C
e/m = V/2B²r² D

Question # 8

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

weak A
strong and uniform B
none-uniform C
zero D

Question # 9

Method "lamp and scale arrangement" used to measure the

angle of deflection A
restoring torque B
magnetic field strength C
current D

Question # 10

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Thumb
A
Curled fingers
B
Middle finger
C
Arm of right hand
D
None of these
E

Question # 11

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

loop A
circle B
bar magnet C
none of these D

Question # 12

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

Heating effect of current A
Chemical effect of current B
Magnetic effect of current C
Electromagnetic effect of current D

Question # 13

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

Greater than 300 A
Smaller than 300 B
Equal to 300 C
Any of (A) or (B) D
Any of (A) or(C) E

Question # 14

The galvanometer can be made sensitive if the value of the factor C/BAN is

constant A
small B
large C
none of these D

Question # 15

A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

Zero A
10⁵m B
10^-10N C
10⁸N D

Question # 16

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

N A
N/Am B
Am/N C
Nm/A D
None of these E

Question # 17

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:

Becomes Half A
Becomes double B
Is not affected C
Becomes one fourth D
None of these E

Question # 18

A solenoid is a coil of wire which is:

Short, loosely wound, cylindrical
A
Long, tightly wound, spherical
B
Long, loosely wound, cylindrical
C
Long, tightly wound, cylindrical
D
None of these
E

Question # 19

Magnetic induction is also called as:

Ampere’s law
A
Faraday’s law
B
Lenz’s law
C
Newton’s law
D
Coulomb’s law
E

Question # 20

The magnetic field outside the solenoid due to current is

strong A
zero B
weak C
uniform D

Question # 21

NmA^-1is commonly called:

Weber A
Apmere B
Guass C
Coulomb D
None of these E

Question # 22

In the region surrounding a current carrying wire:

A magnetic field is setup
A
The lines of force are elliptical
B
Direction of lines of forces depends upon direction of current
C
Both (A) and (C)
D
All of these E

Question # 23

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

+e(v x B) A
-C(V x B) B
+e²(v x B) C
-e(v²x B) D

Question # 24

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

dead beat galvanometer A
stable galvanometer B
shunt galvanometer C
sensitive galvanomter D

Question # 25

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

5N A
4N B
1.5N C
6N D

Question # 26

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

F=IB/L A
F= L x B/I B
F = IL x B C
F = IL . B D

Question # 27

A full-scale deflection is obtained in a galvanometer with a current of few

ampere A
volts B
milliampere C
ohm D

Question # 28

For the conversion of galvanometer into voltmeter, we connect a

small resistance in series with galvanometer A
small resistance in parallel with galvanometer B
high resistance in parallel with galvanometer C
high resistance series with galvanometer D

Question # 29

A resistance used in galvanometer to make it voltmeter is called

shunt resistance A
high resistance B
zero resistance C
none of these D

Question # 30

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

Total number of turns of solenoid
A
Number of turns per unit length
B
Number of turns per unit volume
C
Numbers of turns per unit area
D
Number of moles
E

Sr.#	Question	Answer
1	The field around a moving charge is called	A. magnetic field B. conservative field C. non-conservative field D. none of these
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	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
4	A shunt resistance parallel to the galvanometer is used to convert it into	A. avometer B. millimeter C. voltmeter D. none of these
5	magnetic field is a:	A. Vector quantity B. Scalar quantity C. Scalar as well as scalar quantity D. Any of (A) or (B)
6	A relationship between Gauses of magnetic induction and Tesla(T) is given by	A. G 10^-3T B. G = 10^-2T C. G = 10^-4T D. G = 10^-1T
7	The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by	A. F=eVB B. F=e²V/B C. F=e/VB D. F=B²/ev
8	The current sensitivity of the galvanometer is	A. C/BAN B. BAN/C C. CAN/B D. CBN/A
9	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
10	The voltage increases linearly with	A. time B. velocity C. acceleration D. torque

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ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

ECAT Pre General Science Physics Chapter 14 Electromagnetism

Tesla is the unit of

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

The SI unit of flux density is.

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

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

The SI unit of magnetic permeability is

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

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

Method "lamp and scale arrangement" used to measure the

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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

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

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

The galvanometer can be made sensitive if the value of the factor C/BAN is

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

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

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 solenoid is a coil of wire which is:

Magnetic induction is also called as:

The magnetic field outside the solenoid due to current is

NmA-1 is commonly called:

In the region surrounding a current carrying wire:

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

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 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

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

A full-scale deflection is obtained in a galvanometer with a current of few

For the conversion of galvanometer into voltmeter, we connect a

A resistance used in galvanometer to make it voltmeter is called

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

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A magnetic force on an electron travelling with 10⁸ms^-1parallel to a field of strength 1 Wb m^-2is

NmA^-1is commonly called:

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