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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

ECAT Pre General Science Physics Chapter 14 Electromagnetism

00:00
Question # 1

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

Question # 2

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 # 3

A galvanometer is an instrument used to

Question # 4

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

Question # 5

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

Question # 6

The CRO deflects the beam of electrons, when they passes through uniform

Question # 7

Tesla is the unit of

Question # 8

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

Question # 9

if the field is directed along the normal to the area, then flux is:

Question # 10

Magnetic flux and flux density are related by

Question # 11

Which is modified form of galvanometer

Question # 12

A current carrying conductor sets up its own:

Question # 13

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

Question # 14

The SI unit of magnetic flux is

Question # 15

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

Question # 16

The most suitable material for permanent magnet is

Question # 17

The pointer of a magnetic compass:

Question # 18

The unit of flux density is also given by

Question # 19

Galvanometer is a device used for the detection of

Question # 20

Electron gun consist of

Question # 21

The strength of magnetic field around the current conductor is

Question # 22

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 23

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

Question # 24

Method "lamp and scale arrangement" used to measure the

Question # 25

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

Question # 26

The SI unit of flux density is.

Question # 27

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 28

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

Question # 29

The gavanometer constant of a moving coil galvanometer is given by

Question # 30

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

Submit

Prepare Complete Set Wise ECAT Pre General Science Physics Chapter 14 Electromagnetism MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of ECAT Pre General Science Physics Chapter 14 Electromagnetism MCQ`s Test

  • M
    M Abduullah 17 - Feb - 2021 13 Min 51 Sec 65/120
  • W
    Waleed Ahmed 25 - Feb - 2023 18 Min 24 Sec 55/120
  • I
    Inzmam Rajper 16 - Jun - 2022 10 Min 50 Sec 50/120
  • H
    Hiba Akhtar 06 - Mar - 2023 06 Min 56 Sec 45/120

ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
3 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
4 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
5 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
6 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
7 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
8 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
9 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
10 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small

Test Questions

Is this page helpful?

Share your comments & questions here

Guest

  • No comments yet. Be the first to comment!