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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Method "lamp and scale arrangement" used to measure the

Question # 6

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 7

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 8

In the expression of force experienced by electron, the direction of both v and B are

Question # 9

The SI unit of flux density is

Question # 10

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 11

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 12

NmA-1 is commonly called:

Question # 13

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

Question # 14

Magnetic flux and flux density are related by

Question # 15

Magnetic induction is also called as:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
2 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
3 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
5

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
6 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
7 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
8 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
9

the current is pass through the straight wire. The magnetic field established around it has its lines of force:
A.

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
10 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density

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