# A charge of #-1 C# is at the origin. How much energy would be applied to or released from a # -1 C# charge if it is moved from # ( -1, 3 ) # to #(-2 ,7 ) #?

##### 1 Answer

#### Explanation:

Given two point charges

Let the point of origin be O(0,0) where -1C charge is placed.The initial or first position of another -1C charge is A (-1,3)and its final or displaced position is B (-2.7)

The initial distance of the charge from origin O is

The final distance of the charge from origin O is

Formula for calculation PE

The change in PE for movement of -1C charge from A to B is

As the change in PE is negative the energy will be released for the movement of the charge.