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 unit of magnetic flux is

Question # 2

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

Question # 3

The SI unit of flux density is

Question # 4

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

Question # 5

The SI unit of magnetic flux is.

Question # 6

The SI unit of magnetic induction is tesla which is equal to

Question # 7

The pointer of a magnetic compass:

Question # 8

The current sensitivity of the galvanometer is

Question # 9

F = I(L x B) is a

Question # 10

The current is measured in

Question # 11

Lorentz force is defined as

Question # 12

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

Question # 13

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 14

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 15

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

Question # 16

The voltage increases linearly with

Question # 17

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

Question # 18

Ammeter is used to measure

Question # 19

A charged particle moving at right angle to the magnetic field will experience

Question # 20

The SI unit of magnetic permeability is

Question # 21

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

Question # 22

Amperean path is a:

Question # 23

The sources of magnetic field are

Question # 24

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

Question # 25

Resistance is measured in

Question # 26

Magnetic lines of force:

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

Tesla is the unit of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
2 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
3 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
4

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
5 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
6 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
7 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
8 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
9 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
10 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

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