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

The force acting on a charge moving in a magnetic field

Question # 2

To convert galvanometer into ammeter we connect

Question # 3

The vector representation of force experience give the direction of

Question # 4

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

Question # 5

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 # 6

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 7

The current sensitivity of the galvanometer is

Question # 8

Current is measured in

Question # 9

The SI unit of flux density is.

Question # 10

Ammeter is used to measure

Question # 11

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

Question # 12

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

Question # 13

A current carrying conductor sets up its own:

Question # 14

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

Question # 15

F = I(L x B) is a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
4 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
5 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
6 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
7 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
8 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
9 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
10 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

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