ln an electric field the work done in bringing a 2 coulomb charge from infinity to a point A is 10 joules and in bringing the same charge to some another point 8 is 20 joules. Find the potential difference between two points A and 8. What would be the work done if the same charge is brought directly from A to 8 ?

ln an electric field the work done in bringing a 2 coulomb charge from

1.	ln an electric field the work done in bringing a 2 coulomb charge from infinity to a point A is 10 joules and in bringing the same charge to some another point 8 is 20 joules. Find the potential difference between two points A and 8. What would be the work done if the same charge is brought directly from A to 8 ?
Answer» Solution :Work done =10 JOULE Charge =2 Coulomb Potential of point A `= V_(A)=(10J)/(2C)= 5 V` Given work done = 20 Joule Charge = 2 coulomb . Potential of Point B = `V_(B)= (20J)/(2C)= 10`V Potential difference between two POINTS A and B is `V=V_(B)-V_(A)` = 10V -5V = 5 V . Work done DIRECTLY from A to B . Work done = Potential difference `xx` charge `= 5V xx2` C = 10 Joule