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

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 # 2

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 3

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

Question # 4

How many number of anodes used in electron gun

Question # 5

In a moving coil galvanometer, the deflecting couple depends upon

Question # 6

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 # 7

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 # 8

The voltage increases linearly with

Question # 9

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

Question # 10

The magnetic field inside a solenoid can be increased by:

Question # 11

Flurescent screen is a screen where visible spot

Question # 12

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 13

A beam of electrons is provided by an

Question # 14

A galvanometer is an instrument used to

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
6 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
7 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
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 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)
10 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter

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