Electrostatics (NEET Physics): Questions 89 - 92 of 107

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: 89

» Electrostatics » Torque on a Dipole in a Uniform Electric Field.

MCQ▾

Question

Electric charges q, q, -2q are placed at the corners of an equilateral triangle ABC of side l. The magnitude of electric dipole moment of the system is

Choices

Choice (4) Response

a.

3ql

b.

2ql

c.

4q l

d.

ql

Question number: 90

» Electrostatics » Coulomb's Law

MCQ▾

Question

The charges on two spheres are + 7 μ C and -5 μ C respectively. They experience a force F. If each of them is given an additional charge of -2 μ C, the new force of attraction will be

Choices

Choice (4) Response

a.

F

b.

F3

c.

F2

d.

2F

Question number: 91

» Electrostatics » Forces Between Two Point Charges

MCQ▾

Question

A charged ball B hangs from a silk thread S, which makes an angle θ with a large charged conducting sheet P, as shown in the figure. The surface charge density a of the sheet is proportional to

A charged ball system

A Charged Ball System

A charged ball B hangs from a silk thread S, which makes an angle θ with a large charged conducting sheet P

Choices

Choice (4) Response

a.

Sin θ

b.

Cot θ

c.

Cos θ

d.

Tan θ

Question number: 92

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Three charges Q , +q and +q are placed at the vertices of right-angled isosceles triangle as shown in the figure. The net electrostatic energy of the configuration is zero if Q is equal to

Right-angled isosceles triangle with 3 charges

Right-Angled Isosceles Triangle With 3 Charges

Q, +q, and + q charges placed at the vertices of right-angled isosceles triangle.

Choices

Choice (4) Response

a.

2q2+21

b.

2q2+2

c.

2q

d.

q1+2

f Page
Sign In