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

For the conversion of galvanometer into voltmeter, we connect a

Question # 2

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

Question # 3

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

Question # 4

NmA-1 is commonly called:

Question # 5

The SI unit of magnetic flux is

Question # 6

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

Question # 7

Which one of the following relations is correct?

Question # 8

The voltage increases linearly with

Question # 9

To convert galvanometer into ammeter we connect

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

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

Question # 12

The direction of lines of force depends upon the direction of

Question # 13

The force acting on a charge moving in a magnetic field

Question # 14

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 # 15

Magnetic induction is also called as:

Question # 16

In the region surrounding a current carrying wire:

Question # 17

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 18

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 # 19

Weber is a unit of

Question # 20

A resistance used in galvanometer to make it voltmeter is called

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 25

A beam of electrons is provided by an

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

Avo-meter is used of measure the

Question # 30

magnetic field is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
2 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
3 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
6 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
7 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
8 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
9 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
10 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these

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