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

In a moving coil galvanometer, the deflecting couple depends upon

Question # 2

A long wire wound tightly on a cylindrical core is called:

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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:

Question # 7

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 8

Which one of the following relations is correct?

Question # 9

The SI unit of flux density is.

Question # 10

The SI unit of flux density is

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

A beam of electrons is provided by an

Question # 15

Ammeter is used to measure

Question # 16

A solenoid is a coil of wire which is:

Question # 17

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

Question # 18

Weber is a unit of

Question # 19

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 # 20

Lorentz force is defined as

Question # 21

Method "lamp and scale arrangement" used to measure the

Question # 22

Flurescent screen is a screen where visible spot

Question # 23

The sources of magnetic field are

Question # 24

The magnetic field outside the solenoid due to current is

Question # 25

The magnetic field inside a solenoid can be increased by:

Question # 26

The SI unit of magnetic induction is

Question # 27

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

Question # 28

The voltage increases linearly with

Question # 29

F = I(L x B) is a

Question # 30

To convert galvanometer into ammeter we connect

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
2 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
3 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
4 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
5 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
6 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 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
9 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
10 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

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