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

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

Question # 2

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 # 3

Tesla is the unit of

Question # 4

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 # 5

The most suitable material for permanent magnet is

Question # 6

The force acting on a charge moving in a magnetic field

Question # 7

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

Question # 8

In the region surrounding a current carrying wire:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

A galvanometer is an instrument used to

Question # 13

In a moving coil galvanometer, the deflecting couple depends upon

Question # 14

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

Question # 15

Resistance is measured in

Question # 16

The torque per unit twist of coil is called

Question # 17

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

Question # 18

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 19

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

Question # 20

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 21

The CRO is used for displaying the waveform of a given

Question # 22

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 # 23

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

Question # 24

The SI unit of magnetic induction is

Question # 25

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

Question # 26

Amperean path is a:

Question # 27

Magnetic flux and flux density are related by

Question # 28

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 29

The current is measured in

Question # 30

Centripetal force for electron is given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
2 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
3 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
4 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
5 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
6 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
7 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
8 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
9 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
10 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these

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