ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

To convert galvanometer into ammeter we connect

Question # 2

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 3

Centripetal force for electron is given by

Question # 4

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

Question # 5

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

Question # 6

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 7

A beam of electrons is provided by an

Question # 8

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

Question # 9

The strength of magnetic field around the current conductor is

Question # 10

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

Question # 11

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 # 12

For the conversion of galvanometer into voltmeter, we connect a

Question # 13

The permeability of free space is measured in:

Question # 14

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

Question # 15

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:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
3 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
4 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
5 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
6 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
7 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
8 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
9 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
10 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2

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