Magnetic Effects of Current and Magnetism-Electric Charge Moving in Magnetic Field (NEET Physics): Questions 18 - 22 of 29

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 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: 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 Equation and Equation represents the radii of curvature of circular path than Equation is,

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 21

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

MCQ▾

Question

A beam of protons is moving horizontally towards you. As it approaches, it passes through a magnetic field directed downward. The beam deflects-

 Finding magnetic field direction in a matrix

Finding Magnetic Field Direction in a Matrix

In figure cross indicate that the magnetic field directed downward, and the deflection of proton beam also shown in figure.

Choices

Choice (4) Response

a.

Nothing can be said

b.

To your left side

c.

Does not deflect

d.

To your right side

Question number: 22

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

MCQ▾

Question

A straight horizontal copper wire carries a current i = 30 A. The linear mass density of the wire is 45 g/m. What is the magnitude of the magnetic field needed to balance its weight?

Choices

Choice (4) Response

a.

0 Gauss

b.

147 Gauss

c.

441 Gauss

d.

14.7 Gauss

f Page
Sign In