Question:
what would be the work done in taking a charge 5 micro columb from one point to another point on the circumference of the circle of radius 10 cm , with another point charge 10microcolumb at the centre of the circle
Answer:
All the points of the circumference of a circle are at equal distance from the centre.
So, the circumference of circle is an equipotential surface because of the charge 10μC at the centre of circle.
And as we know that the work done to move a charge (5μC) on a equipotential surface is zero.
So, in this question the work done to move the 5μC charge on the circumference of circle is zero.
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