ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

The permeability of free space is measured in:

Question # 2

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

Question # 3

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 # 4

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 5

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 # 6

The force experienced by charged particle is maximum, if it moves

Question # 7

Current is measured in

Question # 8

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

Question # 9

Amperean path is a:

Question # 10

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

Question # 11

Weber is a unit of

Question # 12

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

Question # 13

A beam of electrons is provided by an

Question # 14

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 15

A solenoid is a coil of wire which is:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
2

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
3 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
4 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
5 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
6 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
7 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
8 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
9 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
10 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

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