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 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 # 2

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

Question # 3

The field around a moving charge is called

Question # 4

Flurescent screen is a screen where visible spot

Question # 5

Tesla is the unit of

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

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

Question # 8

A beam of electrons is provided by an

Question # 9

A charged particle moving at right angle to the magnetic field will experience

Question # 10

Resistance is measured in

Question # 11

The voltage increases linearly with

Question # 12

The magnetic field inside a solenoid can be increased by:

Question # 13

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

Question # 14

F = I(L x B) is a

Question # 15

The force acting on a charge moving in a magnetic field

Question # 16

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

Question # 17

The SI unit of flux density is

Question # 18

Galvanometer is a device used for the detection of

Question # 19

The magnetic field outside the solenoid due to current is

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

Amperean path is a:

Question # 24

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 25

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

Question # 26

Magnetic induction is also called as:

Question # 27

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 28

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

Question # 29

How many number of anodes used in electron gun

Question # 30

The unit of flux density is also given by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
2 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
3 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
4 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
5 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
6 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
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 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
9 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
10 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

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