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

Question # 2

Electron gun consist of

Question # 3

Flurescent screen is a screen where visible spot

Question # 4

Amperean path is a:

Question # 5

The unit of flux density is also given by

Question # 6

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

Question # 7

The magnetic field outside the solenoid due to current is

Question # 8

Current is measured in

Question # 9

The direction of lines of force depends upon the direction of

Question # 10

Weber is a unit of

Question # 11

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

Question # 12

The current sensitivity of the galvanometer is

Question # 13

The SI unit of magnetic flux is

Question # 14

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 # 15

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 16

Lorentz force is defined as

Question # 17

Magnetic flux and flux density are related by

Question # 18

In a moving coil galvanometer, the deflecting couple depends upon

Question # 19

Method "lamp and scale arrangement" used to measure the

Question # 20

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

Question # 21

Which one of the following relations is correct?

Question # 22

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

Question # 23

The unit of magnetic flux is

Question # 24

When current passes through a solenoid coil, it behaves like a

Question # 25

A resistance used in voltmeter is called

Question # 26

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

Question # 27

The force acting on a charge moving in a magnetic field

Question # 28

The SI unit of flux density is

Question # 29

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

Question # 30

The torque per unit twist of coil is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
2 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
3 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
4 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
5 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
6 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
7 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
8 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
9 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
10 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these

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