Magnetic Effects of Current and Magnetism-Electric Charge Moving in Magnetic Field (NEET Physics): Questions 16 - 20 of 28

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2098 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

Question number: 16

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

An electron is revolving in a circular path of radius 2 x l0 -10 m with a speed of 3 x l0 6 m/s. The magnetic field at the center of circular path will be

Choices

Choice (4) Response

a.

0

b.

1.2 T

c.

2.4 T

d.

3.6 T

Question number: 17

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

An α-particle is describing a circle of radius 0.45 m in a field of magnetic induction 1.2 weber/m 2. The potential difference required to accelerate the particle, (The mass of a-particle is 6.8 x 10 -27 kg and its charge is 3.2 x 10 -19 coulomb. ) will be

Choices

Choice (4) Response

a.

2.3 x 10 -12 V

b.

6 x 10 6 V

c.

7 x 10 6 V

d.

3.2 x 10 -12 V

Question number: 18

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

If an α-particle moving with velocity V enters perpendicular to a magnetic field then the magnetic force acting on it will be

Choices

Choice (4) Response

a.

2evB

b.

4evB

c.

0

d.

evB

Question number: 19

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

An electron beam passes through a magnetic field of 2 x 10 -3 weber/m 2 and an electric field of 1.0 x 10 4 volt/m both acting simultaneously. If the electric field is removed, what will be the radius of the electron path?

Choices

Choice (4) Response

a.

1.43 cm.

b.

0.43 cm

c.

3.43 cm.

d.

2.43 cm.

Question number: 20

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

An electron and a proton having same kinetic energy enter a magnetic field at right angles. If ra and rb represents the radii of curvature of circular path than rarb is,

Choices

Choice (4) Response

a.

mbma

b.

(mamb)12

c.

mamb

d.

(mbma)12

f Page
Sign In