Question

Find the work done by some external force in moving a charge q=4 muC from infinity to a point, where electric potential is 10^(4)V

Answer 1

Answer:

Work done is equal to 0.04 J.

Explanation:

Given,

Charge (q) = 4 μC =4 * 10⁻⁶ C

Electric potential at that point = V = 10⁻⁴ V

To find : work done by some external force in moving a charge from infinity to a point.

Solution:

Work done is given as product of charge and potential.

i.e W = qV

here, q = 4 * 10⁻⁶ C , V = 10⁴ V

Substituting the values,

W = 4 * 10⁻⁶ C * 10⁴ V

W = 0.04 J

Therefore, Work done is equal to 0.04 J.