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

The SI unit of magnetic flux is

Question # 2

Ammeter is used to measure

Question # 3

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

Question # 4

The voltage increases linearly with

Question # 5

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

Question # 6

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

Question # 7

Amperean path is a:

Question # 8

A resistance used in galvanometer to make it voltmeter is called

Question # 9

A voltmeter is used to measure the

Question # 10

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

Question # 11

When current passes through a solenoid coil, it behaves like a

Question # 12

The magnetic field in the middle of a solenoid due to current is

Question # 13

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

Question # 14

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

Question # 15

A field is uniform and much stronger:

Question # 16

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

Question # 17

A charged particle moving at right angle to the magnetic field will experience

Question # 18

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 # 19

Current is measured in

Question # 20

The current is measured in

Question # 21

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

Question # 22

Lorentz force is defined as

Question # 23

Centripetal force for electron is given by

Question # 24

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 25

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

Question # 26

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

Question # 27

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 28

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 29

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
3 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
4 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
5 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
6 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
7 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
8 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
9 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
10 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid

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