Electrostatics-Electrostatic Potential Energy (NEET Physics): Questions 6 - 9 of 17

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Question number: 6

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Two charges q 1 and q 2 are placed 30 cm apart, shown in the figure. A third charge q 3 is moved along the arc of a circle of radius 40 cm from C to D. The change in the electrostatic potential energy of the system is q34πϵ0P . What will be P?

Diagram 1 - Two charges q1 and q2

Diagram 1 - Two Charges q1 and q2

In figure two charges q1 and q2 are placed 30 cm apart. A third charge q3 is moved along the arc of a circle of radius 40 cm from C to D

Choices

Choice (4) Response

a.

8 q 2

b.

8 q 1

c.

6q 2

d.

6 q 1

Question number: 7

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

When the separation between two charges is increased, the electric potential energy of the charges is,

Choices

Choice (4) Response

a.

decreases

b.

may increase or decrease

c.

Remains the same

d.

Increases

Question number: 8

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Three particles, each having a charge of 10µC are placed at the corners of an equilateral triangle of side 10 cm. What is the electrostatic potential energy of the system? ( k=14πϵ0 = 9xl0 9 Nm 2 /C 2)

Choices

Choice (4) Response

a.

Zero

b.

27 J

c.

Infinite

d.

100 J

Question number: 9

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

Three charges of equal value q’ are placed at the vertices of an equilateral triangle. What is the net potential energy, if the side of equilateral triangle is l?

Choices

Choice (4) Response

a.

14πϵ03q2l

b.

-14πϵ0q2l

c.

14πϵ02q2l

d.

14πϵ04q2l

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