2 What is the work done to move
a charge from one point to another
point on equipotential surface ?
Answers
Answer:
An equipotential surface is one in which all the points are at the same electric potential. If a charge is to be moved between any two points (say from point A to point B ) on an equipotential surface.
Explanation:
According to the formula
dW=q . dVdW=q . dV, the work done becomes zero
What is the work done to move a charge from one point to another point on equipotential surface ?
→ Considering the positions "A" and "B" from where we will move test charge.
→ We know that the work done in moving a unit positive charge from "A" to "B" is equal to the potential difference between "A" and "B" .
i.e.
» W (from A to B) = V (at B) - V (at A)
→ On equipotential surface,
» V (at A) = V (at B)
So,
» W (from A to B) = 0
→ Hence , work done in moving a test charge from one point to another point on an equipotential surface is zero.
Hope it helped u.