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

Question # 2

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 3

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 4

The force acting on a charge moving in a magnetic field

Question # 5

The CRO is used for displaying the waveform of a given

Question # 6

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

Question # 7

A voltmeter is used to measure the

Question # 8

Magnetic induction is also called as:

Question # 9

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 # 10

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 11

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

Question # 12

Electron gun consist of

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Lorentz force is defined as

Question # 19

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

Question # 20

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

Question # 21

Tesla is the unit of

Question # 22

Amperean path is a:

Question # 23

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

Question # 24

The SI unit of magnetic flux is

Question # 25

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

Question # 26

NmA-1 is commonly called:

Question # 27

Which one of the following relations is correct?

Question # 28

The current is measured in

Question # 29

In a moving coil galvanometer, the deflecting couple depends upon

Question # 30

In the formula B= µ̻ nl, the symbol n denotes:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
2

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

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

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
4 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
5 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
6 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
7 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
8 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
9 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
10 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force

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