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

Weber is a unit of

Question # 2

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 3

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

Question # 4

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 # 5

The strength of magnetic field around the current conductor is

Question # 6

The direction of lines of force depends upon the direction of

Question # 7

The vector representation of force experience give the direction of

Question # 8

The current sensitivity of the galvanometer is

Question # 9

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 10

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 11

Tesla is the unit of

Question # 12

magnetic field is a:

Question # 13

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 14

Amperean path is a:

Question # 15

The magnetic field outside the solenoid due to current is

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ECAT Class Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
2 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
3 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
4 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
5 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
6 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
7 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
8 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
9 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
10 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current

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