ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The gavanometer constant of a moving coil galvanometer is given by

Question # 2

The SI unit of magnetic flux is

Question # 3

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 # 4

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

Question # 5

A solenoid is a coil of wire which is:

Question # 6

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

In a moving coil galvanometer, the deflecting couple depends upon

Question # 9

F = I(L x B) is a

Question # 10

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

Question # 11

Flurescent screen is a screen where visible spot

Question # 12

Tesla is the unit of

Question # 13

Which one of the following relations is correct?

Question # 14

A beam of electrons is provided by an

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
2 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
3 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
4

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
5 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
6 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
7 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
8 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
9 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
10 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt

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