- #1

- 28

- 1

A) 0

B) 1.2 X 10^-5

C) 3.0 X 10^-5

D) 6.0 X 10^-5

E) 6.0X10^-6

Can someone please explain how to start off doing this problem. I thought that it involved the equation U= U2-U1= W. But, I am unsure how you connect the two.

Thank you

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- Thread starter blackout85
- Start date

- #1

- 28

- 1

A) 0

B) 1.2 X 10^-5

C) 3.0 X 10^-5

D) 6.0 X 10^-5

E) 6.0X10^-6

Can someone please explain how to start off doing this problem. I thought that it involved the equation U= U2-U1= W. But, I am unsure how you connect the two.

Thank you

- #2

- 261

- 2

Or you can think of it this way -- how much work did it take to move the charge one way? Then how much work did it take to move the charge back?

It helps your intuition if you think of the situation as rolling a ball up a hill. How much work does gravity do when you roll a ball up a hill? How much work does gravity do when the ball rolls back down?

- #3

- 28

- 1

The answer then would have to be zero. Am I right to think that

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