更新1:
加圖片 唔該!! 我會+10
點做一個可以發電的模型？
回答 (1)
2007-07-01 8:27 am
✔ 最佳答案
Use a small motor from a electric toy car. Fix a handle onto the axis and connect the terminals of the motor to an electric torch bulb. By turning the handle, electric current will be produced and light the bulb.
收錄日期: 2021-04-29 17:22:03
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070629000051KK03836