A student has three resistors of resistance RRR, 2R2R2R, and 3R3R3R. She connects all three resistors together to form a single network with two external terminals.
What is the ratio:
maximum possible equivalent resistanceminimum possible equivalent resistance \frac{\text{maximum possible equivalent resistance}}{\text{minimum possible equivalent resistance}} minimum possible equivalent resistancemaximum possible equivalent resistancethat can be achieved using this network?
6.06.06.0
9.09.09.0
11.011.011.0
18.018.018.0
42 exam-style questions on OCR GCSE Physics Simple circuits. Each one has a worked solution and a mark scheme showing where the marks go.