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

Question # 2

The pointer of a magnetic compass:

Question # 3

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

Question # 4

A charged particle moving at right angle to the magnetic field will experience

Question # 5

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

Question # 6

To convert galvanometer into ammeter we connect

Question # 7

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 # 8

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 9

In the formula B= µ̻ nl, the symbol n denotes:

Question # 10

When current passes through a solenoid coil, it behaves like a

Question # 11

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

Question # 12

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

Question # 13

Weber is a unit of

Question # 14

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 15

The direction of lines of force depends upon the direction of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
2 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
3 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
4 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
5 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
6 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
7 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
8 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
9 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
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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