In an electric field the work done in bringing at two column charge from infinity to a point a is standards and in bringing the same charge to the same point b is 20 joules find the potential difference between two points a and b what would be the work done if the same charge is brought directly from a to b
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Work done = 10 joule
Charge = 2 coulomb
Potential of point A VA = 10 J / 2C = 5V
Given work done = 20 Joule
Charge = 2 coulomb
Potential of point A VB = 20 J / 2C = 10V
Potential differences between two point A and B is
V = VB - VA
= 10V - 5V = 5V
Work done directly from A to B.
Work done = Potential difference × charge
= 5V × 2C
10 Joule.
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