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 force experienced by charged particle is maximum, if it moves

Question # 2

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 # 3

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 # 4

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

Question # 5

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 # 6

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

Question # 7

The strength of magnetic field around the current conductor is

Question # 8

A solenoid is a coil of wire which is:

Question # 9

A current carrying conductor sets up its own:

Question # 10

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

Question # 11

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 # 12

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

Question # 13

The current sensitivity of the galvanometer is

Question # 14

A beam of electrons is provided by an

Question # 15

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 16

The magnetic field outside the solenoid due to current is

Question # 17

The voltage increases linearly with

Question # 18

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 # 19

The current is measured in

Question # 20

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 21

The direction of lines of force depends upon the direction of

Question # 22

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 # 23

The gavanometer constant of a moving coil galvanometer is given by

Question # 24

The vector representation of force experience give the direction of

Question # 25

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 26

The torque per unit twist of coil is called

Question # 27

The unit of flux density is also given by

Question # 28

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

Question # 29

Which is modified form of galvanometer

Question # 30

CRO deflects the beam of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
2 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
3 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)
4 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
5 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
6

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
7 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
8 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
9 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
10 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss

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