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 measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 2

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 3

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

Question # 4

A long wire wound tightly on a cylindrical core is called:

Question # 5

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

Question # 6

Electron gun consist of

Question # 7

The pointer of a magnetic compass:

Question # 8

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 # 9

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

Question # 10

The SI unit of magnetic induction is tesla which is equal to

Question # 11

Strength of magnetic field is measured in SI units, in:

Question # 12

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

Question # 13

Current is measured in

Question # 14

Tesla is the unit of

Question # 15

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 # 16

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 17

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

Question # 18

The angle of deflection of coil can be measured by the

Question # 19

A resistance used in galvanometer to make it voltmeter is called

Question # 20

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

Question # 21

The SI unit of flux density is.

Question # 22

A current carrying conductor sets up its own:

Question # 23

A voltmeter is used to measure the

Question # 24

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

Question # 25

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

Question # 26

To convert galvanometer into ammeter we connect

Question # 27

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

Question # 28

The SI unit of magnetic permeability is

Question # 29

The unit of flux density is also given by

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
2 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
3 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
4 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
5 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
6 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
7 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
8 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
9 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
10 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them

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