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Standard XII
Physics
Equipotential Surfaces
Question

Depict the equipotential surfaces for a sytem of two identical positive point charges placed a distance 'd' apart.

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Solution
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Equipotential surfaces due to two identical charges is shown in figure.

For two same charges the charges will repeal each other at a distance 'd' forming equipotencial surfaces.

1662622_1780996_ans_1bfda82375654564933be258828dae98.png

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Similar Questions
Q1

Two charges 2 μC and –2 μC are placed at points A and B 6 cm apart. (a) Identify an equipotential surface of the system. (b) What is the direction of the electric field at every point on this surface?

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Q2

Consider two identical charges placed at a distance 2d apart as shown in the figure. The equilibrium of a positive test charge placed at point 0 midway between them may be:

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Q3

Write two properties of equipotential surfaces. Depict equipotential surfaces due to an isolated point charge. Why do the equipotential surfaces get closer as the distance between the equipotential surface and the source charge decreases ?

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Q4

Assertion: Consider two identical charges placed distance 2 d apart, along x-axis.
The equilibrium of a positive test charge placed at the point O midway between them is stable for displacements along the x-axis.
Reason: Force on test charge is zero.

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Q5

Assertion :Consider two identical charges placed at a distance 2d apart, along the x-axis. The state of equilibrium of a positive test charge placed at the point O midway between them is stable for displacements along the x-axis. Reason: Force on test charge is zero.
89697_8def52d607eb4842aa4e235b7ae5d43d.png

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