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 SI unit of flux density is.

Question # 2

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 3

Method "lamp and scale arrangement" used to measure the

Question # 4

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 5

The SI unit of magnetic induction is tesla which is equal to

Question # 6

The SI unit of magnetic flux is.

Question # 7

The current sensitivity of the galvanometer is

Question # 8

How many number of anodes used in electron gun

Question # 9

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 # 10

Magnetic induction is also called as:

Question # 11

magnetic field is a:

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 solenoid is a coil of wire which is:

Question # 14

A galvanometer is an instrument used to

Question # 15

The unit of magnetic flux is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
2 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
3 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
4 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
5 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
6 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
7 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
8 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
9 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
10 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance

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