What is the electric potential energy U of the test charge at point A? U qV. 6.

Question

What is the electric potential energy U of the test charge at point A? U qV. 6. What is the electric potential energy of the test charge at point B ? 7. Has the electric potential energy the test charge increased or decreased in going from Point A to Point B? 8. What has happened 10 the kinetic energy K'E of the particle in going from rest at Point A to whizzing past Point B? 9. Let's assume we put a linger on the lot charge and slop and hold it at Point B. If you now let go of the test charge, is the force it experiences (greater than less than, or the same) as it was at Point A? Why? 10. What can you say about the strength of the electric field (E.= F/q) at Points B compared to Point A? (greater than, less than, or the same)

Explanation / Answer

5:- Let the value of test charge be q.
Now, We know that, Electric potential energy is given as:- U= qV
Also, at point A: Electric potential value,V= 6V
So, U= 6q
6:- Electric potential energy of the test charge at point B:
U= 4.5q
7:- It has decreased in going from point A to B. (We have assumed test charge as positive.)
8:- Since the potential energy has decreased in going from point A to B but we know that, total energy of the particle remains constant at any point,hense, the kinetic energy of the test charge increases in going from point A to B.

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