Question

what will be the signs of potential difference between Vp-Vq,Va-Vb from the diagram given ​

Answer 1

Answer:

i) when q >0

Potential difference between two points in an electrostatic field is the amount of work in moving a unit +ve charge from one point to another against the field .

Here VA>VB

∴VA−VB is positive

(ii) if q <0

Here we move unit +ve charge from A in order to go against the field.

VB>VA

∴VA−VB is negative

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