Question

# Angle between an equipotential surface and electric lines of force is :

A
0o
B
90o
C
180o
D
270o
Solution
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#### The angle between Electric field and an equi-potential surface is always 900. This is because,when the potential becomes constant,the negative potential gradient also becomes zero,hence necessitating the need for Electric field to be always normal with surface.

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Q1

Define an equipotential surface. Draw equipotential surfaces :

(i) in the case of a single point charge and
(ii) in a constant electric field in Z-direction.

Why the equipotential surfaces about a single charge are not equidistant ?
(iii) Can electric field exist tangential to an equipotential surface ? Give reason.

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Q2

The electric field lines are always perpendicular to an equipotential surface.

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Q4

Electric lines of force always leave an equipotential surface.

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Q5

Figure shows two equipotential lines in XY plane for an electric field. The X-component of the electric filed, Ex and Y-component, Ey in the space between these equipotential lines are respectively View Solution
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