Which of the following statements is not true?
- AWork done to move a charge on an equipotential surface is not zero
- BEquipotential surfaces are the surfaces where the potential is constant
- CEquipotential surfaces for a uniform electric field are parallel and equidistant from each other
- DElectric field is always perpendicular to an equipotential surface
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There are two equipotential surfaces as shown in the figure. The distance between them is $r$. If a charge of $-q \text{ C}$ is moved from surface $A$ to surface $B$,the resultant work done will be:
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View SolutionAssertion $(A)$: In a region of constant potential,the electric field is zero and there can be no charge inside the region.
Reason $(R)$: According to Gauss's law,the charge inside the region should be zero if the electric field is zero.
Reason $(R)$: According to Gauss's law,the charge inside the region should be zero if the electric field is zero.
Positive and negative point charges of equal magnitude are kept at $(0, 0, a/2)$ and $(0, 0, -a/2)$,respectively. The work done by the electric field when another positive point charge is moved from $(-a, 0, 0)$ to $(0, a, 0)$ is
If a unit charge is taken from one point to another point over an equipotential surface,then
Equipotential surfaces are shown in the figure. Then the electric field strength will be
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