Please can you help with the questions that I've circle, I'm stuck!
Electricity help? Watch
- Thread Starter
- 13-07-2016 15:33
- 13-07-2016 15:39
If it's 0.2x the length, then the resistance is (original R)/0.2. So the resistance decreases by the same factor the length increases.
That should also help with Q15
- 13-07-2016 15:40
Have you encountered the expression Resistance = density * length / cross sectional area ?