electric----hurry...Thx

2006-10-24 4:39 am

a).What is the electric field strength E at a 1 distance of 1 cm from a 100-mC charge in transformer oil?

b). what is E at twice the distance.

回答 (1)

2006-10-24 5:35 am

✔ 最佳答案

a)
E = ( 1/ 4 pi eo er )( q / r^2 )

you need er of the transformer oil and put into the formula above.

b)
1/4 of the answer of part a.

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