問題:
點Ｘ與帶電導電球相距２ CM。
在Ｘ的電勢是１．６Ｖ／ｍ。
求在Ｘ的電場強度。
電勢同電勢能~~
2011-06-16 5:28 pm
回答 (1)
2011-06-16 7:53 pm
✔ 最佳答案
Potential V at X is given by,V = kQ/R
where Q is the charge on the conducting sphere
R is the distance between the sphere and X (= 2 cm)
k is a constant
Electric field intensity E at X is given by,
E = kQ/R^2
Hence, E/V = [kQ/R^2]/[kQ/R] = R/R^2 = 1/R
hence, E = V/R = 1.6/(0.02) N/C = 80 N/C
收錄日期: 2021-04-29 17:44:39
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110616000051KK00153