What's the battery's internal resistance?
Find the potential difference across the battery's terminals.
A 12.0-V battery produces 210 mA when it's across a 48.0 Ω load.?
2017-09-25 10:08 pm
回答 (1)
2017-09-25 10:15 pm
✔ 最佳答案
V = I (r + R)12.0 = 0.210 × (r + 48)
r + 48 = 57.1
Internal resistance, r = 9.1 Ω
Potential difference across the battery's terminals
= 0.210 × 48.0
= 10.1 V
收錄日期: 2021-04-18 17:57:44
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20170925140834AAFGDUk