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

Question # 1

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

Circular and endless
A
Oval in shape and endless
B
Straight
C
Parabolic
D
All are true E

Question # 2

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 # 3

The force acting on a charge moving in a magnetic field

is perpendicular to the both magnetic field and direction of motion A
is proportional to the magnetic of charges B
vanishes when the motion is directly opposite to the direction of field C
all of the above D

Question # 4

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 # 5

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 # 6

Amperean path is a:

Closed path
A
Rectangular path
B
Circular path
C
Any of above
D
Broken path
E

Question # 7

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 # 8

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 # 9

Resistance is measured in

volts A
ampere B
ohm C
watt D

Question # 10

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

loop A
circle B
bar magnet C
none of these D

Question # 11

The working of galvanometer depends upon torque exerted on a current carrying coil in

magnetic field A
electric field B
gravitational field C
nuclear field D

Question # 12

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

circular A
elliptical B
cycloid C
straight line D

Question # 13

The voltage increases linearly with

time A
velocity B
acceleration C
torque D

Question # 14

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

parallel A
zero B
perpendicular C
none of them D

Question # 15

A beam of electrons is provided by an

electron gun A
Suppray B
Injection C
None of these D

Question # 16

The angle of deflection of coil can be measured by the

one method A
three method B
two method C
none of these D

Question # 17

Current is measured in

volts A
watt B
ohm C
ampere D

Question # 18

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

velocity A
graph plotting B
time-velocity C
none of these D

Question # 19

The SI unit of magnetic induction is

Gauses A
Tesla B
Weber C
Weber² D

Question # 20

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

minimum A
maximum B
zero C
none of these D

Question # 21

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

magnetic flux A
magnetic flux density B
magnetic induction C
magnetic field intensity D

Question # 22

The SI unit of flux density is.

Tesla A
Weber B
Gaun C
Weber/meter D

Question # 23

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

(x) A
(+) B
(.) C
(-) D
(÷)
E

Question # 24

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 # 25

The SI unit of magnetic flux is

NmA^-2 A
NmA^-1 B
NAm^-1 C
Nm²A^-1 D

Question # 26

Magnetic lines of force:

Cannot intersect at all
A
Intersect at infinity
B
Intersect within magnet
C
Intersect at Neutral Point
D
None of these E

Question # 27

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Sensitive A
Accurate B
Stable C
None of these D

Question # 28

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

F =q(v/B) A
F=q²(v x B) B
F=q(v x B) C
F= vx B D

Question # 29

The unit of magnetic flux is

Weber-m² A
Weber-m³ B
Henry C
Weber D

Question # 30

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

Sr.#	Question	Answer
1	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
2	Which one of the following relations is correct?	A. 1 Wb-m²= Nm^-1A^-1 B. 1 tesla = 104 gausses C. 1 Wb-m²= 1 tesla D. All of the above
3	41 The force experience, when proton projected in a magnetic field with velocity 'v' is	A. +e(v x B) B. -C(V x B) C. +e²(v x B) D. -e(v²x B)
4	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
5	Ammeter is used to measure	A. voltage B. resistance C. voltage and current D. current
6	The magnetic field outside the solenoid due to current is	A. strong B. zero C. weak D. uniform
7	The voltage increases linearly with	A. time B. velocity C. acceleration D. torque
8	the current is pass through the straight wire. The magnetic field established around it has its lines of force:	A. Circular and endless B. Oval in shape and endless C. Straight D. Parabolic
9	For the conversion of galvanometer into voltmeter, we connect a	A. small resistance in series with galvanometer B. small resistance in parallel with galvanometer C. high resistance in parallel with galvanometer D. high resistance series with galvanometer
10	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

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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