Moving Charges and Magnetism Test

Result

Moving Charges and Magnetism Test - 13

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Weekly Quiz Competition

Question 1
4 / -1

A wire carrying current I and other carrying 2I in the same direction produces a magnetic field B at the mid point. What will be the field when 2I wire is switched off

A
B/2

B
2B

C
B

D
4B

Solution
Question 2
4 / -1

Ampere\'s circuital law is equivalent to

A
Biot-Savart's law

B
Coulomb's law

C
Faraday's law

D
Kirchhoff's law
Question 3
4 / -1

A
Always zero

B
Never zero

C

D

Solution
Question 4
4 / -1

A strong magnetic field is applied on a stationary electron, then

A
The electron moves in the direction of the field

B
The electron moves in an opposite direction

C
The electron remains stationary

D
The electron starts spinning
Question 5
4 / -1

A
T

B
4T

C
3T

D
2T
Question 6
4 / -1

In a cyclotron, the angular frequency of a charged particle is independent of

A
Mass

B
Speed

C
Charge

D
Magnetic field

Solution
Question 7
4 / -1

Cyclotron is used to accelerate

A
Electrons

B
Neutrons

C
Positive ions

D
Negative ions
Question 8
4 / -1

When a charged particle enters a uniform magnetic field, its kinetic energy

A
Remains constant

B
Increases

C
Decreases

D
Becomes zero

Solution
Question 9
4 / -1

If cathode rays are projected at right angles to a magnetic field, their trajectory is

A
Ellipse

B
Circle

C
Parabola

D
None of these
Question 10
4 / -1

A charged particle is released from rest in a region of steady uniform electric and magnetic field which are parallel to each other. The particle will move in a

A
Straight line

B
Circle

C
Helix

D
Cycloid