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

The unit of magnetic flux is

Question # 2

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

Question # 3

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

Question # 4

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 # 5

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

Question # 6

The pointer of a magnetic compass:

Question # 7

A current carrying conductor sets up its own:

Question # 8

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

Question # 9

In a moving coil galvanometer, the deflecting couple depends upon

Question # 10

Electron gun consist of

Question # 11

The magnetic field inside a solenoid can be increased by:

Question # 12

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 13

Which one of the following relations is correct?

Question # 14

How many number of anodes used in electron gun

Question # 15

Tesla is the unit of

Question # 16

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 17

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 18

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 19

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 20

Lorentz force is defined as

Question # 21

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

Question # 22

To convert galvanometer into ammeter we connect

Question # 23

Weber is a unit of

Question # 24

The SI unit of magnetic flux is.

Question # 25

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

Question # 26

A voltmeter is used to measure the

Question # 27

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

Question # 28

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

Question # 29

The SI unit of magnetic permeability is

Question # 30

The SI unit of magnetic induction is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
2 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
3 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
4 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
5 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
6 Magnetic induction is also called as:
A.

Ampere’s law

B.

Faraday’s law

C.

Lenz’s law

D.

Newton’s law
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
9 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
10 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

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