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

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

Question # 2

For the conversion of galvanometer into voltmeter, we connect a

Question # 3

Magnetic flux and flux density are related by

Question # 4

NmA-1 is commonly called:

Question # 5

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

Question # 6

Centripetal force for electron is given by

Question # 7

Weber is a unit of

Question # 8

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 # 9

The angle of deflection of coil can be measured by the

Question # 10

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

Question # 11

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 12

Magnetic induction is also called as:

Question # 13

The strength of magnetic field around the current conductor is

Question # 14

Resistance is measured in

Question # 15

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
2

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
3 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)
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
6 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
7 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
8 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
9 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
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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