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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 8

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

Question # 9

The sources of magnetic field are

Question # 10

The permeability of free space is measured in:

Question # 11

Magnetic lines of force:

Question # 12

The gavanometer constant of a moving coil galvanometer is given by

Question # 13

The SI unit of magnetic permeability is

Question # 14

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

Question # 15

A current carrying conductor sets up its own:

Question # 16

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

Question # 17

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

Question # 18

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 19

Which is modified form of galvanometer

Question # 20

The magnetic field inside a solenoid can be increased by:

Question # 21

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

Question # 22

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 23

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

Question # 24

A beam of electrons is provided by an

Question # 25

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 26

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

Question # 27

The unit of flux density is also given by

Question # 28

The current is measured in

Question # 29

To convert galvanometer into ammeter we connect

Question # 30

F = I(L x B) is a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
2 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
3 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
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
6 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
7 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
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 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
10 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure

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