Question

Potential of points P and Q are 10v and -4v respectively. Work done in taking 100 electrons from P to Q ______.

Answer 1

V = J/C

Here V = Potential difference between two points P and Q = 10-(-4)= 14 V

C = 100 × 1.6 ×10^-19

So J = V ×C

J = 14 × 1.6 × 10^-17

J = 22.4 ×10^-17 joules

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