Electrostatics (NEET Physics): Questions 25 - 27 of 107

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Question number: 25

» Electrostatics » Capacitors

MCQ▾

Question

The resultant capacitance of given circuit is

Circuit Diagram with 6 capacitors

Circuit Diagram With 6 Capacitors

6 Capacitor connected as shown in figure between P and Q.

Choices

Choice (4) Response

a.

3C

b.

C/3

c.

2C

d.

None of the above

Question number: 26

» Electrostatics » Electrostatic Potential Energy

MCQ▾

Question

As shown in figure a dust particle with mass m = 5.010 -9 kg and charge q 0 = 2.0 nC starts from rest at point a and moves in a straight line to point b. What is its speed v at point b?

Movement of dust particle from rest in straight line

Movement of Dust Particle From Rest in Straight Line

In figure a dust particle with mass m = 5.0×10-9 kg and charge q0 = 2.0 nC starts from rest at point a and moves in a straight line to point b. At the end points of lines two charges + 3 nC and -3 nC placed.

Choices

Choice (4) Response

a.

26 ms -1

b.

14 ms -1

c.

46 ms -1

d.

34 ms -1

Question number: 27

» Electrostatics » Electric Potential

Assertion-Reason▾

Assertion (Ꭺ)

The electric potential and the electric field intensity at the center of a square having four fixed point charges at their vertices as shown in figure are zero.

Square having four charges at its vertices

Square Having Four Charges at Its Vertices

Square having four charges at its vertices

Reason (Ꭱ)

If electric potential at a point is zero then the magnitude of electric field at that point must be zero.

Choices

Choice (4) Response

a.

Ꭺ is false but Ꭱ is true

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

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