As you walk across a synthetic-fiber rug on a cold, dry winter day, you pick up an excess charge of -56μC?

2014-01-10 8:19 pm
Part a) How many excess electrons did you pick up?

Part b) What is the charge on the rug as a result of your walking across it?

I'm looking at the problem and I don't understand it. Can someone help me?

回答 (1)

2014-01-10 8:26 pm
✔ 最佳答案
a) Each electron has a charge of 1.6 x 10^-19 C.
5 electrons would have a charge of 5 times that.
100 electrons would have a charge of 100 times that.
N electrons would have a charge of N times that.

You know what N times 1.6 x 10^-19 is. So how do you think you find N?

b) The total charge is 0. Every electron on you came from the rug. So the rug has the opposite charge from you.


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