What did you guys write for the question that asked "state how you could keep the current constant?"
Edexcel Physics Unit 3B IAL watch
- Thread Starter
- 11-05-2016 12:54
- 11-05-2016 14:10
A= Area of cross-section (pie * r^2)
i wrote that the student kept the diameter constant.
I am not confident about this answer but that's what i did.
- 11-05-2016 14:14
I talked about having a variable resistor in the circuit so that the resistance can be changed to maintain a constant current.