作者asdhse (10-10-10)
看板Physics
标题[题目] 电磁学的问题
时间Wed Jun 16 16:41:23 2010
题目
A 2.4 m long solenoid is 15.0 cm in diameter and consists of 2500 turns of
wire. The current in the solenoid is increasing at the rate of 1.0 kA/s
问题
Find the current in a wire loop with diameter 7.50 cm and resistance
9.0 欧母, lying inside the solenoid in a plane perpendicular to the solenoid
axis.
我不太了解他说的perpendicular to the solenoid
到底是朝向哪个方向 感觉好抽象
可不可以请问一下这题从哪个角度切入会比较好处理
感激
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 140.116.116.39
1F:→ ajluebxy:如果你solenoid的轴朝向+z轴,那你这个回路所形成的面积 06/16 17:38
2F:→ ajluebxy:的法向量也会朝+z轴。 06/16 17:39
3F:→ ajluebxy:你可以先求出时变磁场,在求出在wire loop的感应电动势 06/16 17:42
4F:→ ajluebxy:再用欧姆定律求出电流 06/16 17:42
5F:→ mouwat:原文是说垂直於轴心吧 06/22 03:04