I am doing AQA GCSE physics and part 2 covers electricity circuit rules and we have to know for series circuits R = R2 + R2 but parallel rule not covered. So I find it strange that this is a supposed exam question from Nelson Thornes book.
We are given a circuit diagram:
Explain why the resistance between B and C is less than the resistance between A and B when switch S is closed.
I looked at this and thought, how to do that. I investigated a bit online and found parallel 1/R eqn but we don't cover that. So are they looking for a non-mathematical answer? How would you answer this question? Given it is GCSE.
Why don't I see the attachment I uploaded?
Not sure why I can't seem to upload gifs but if you type this in Google between quotes it shows question - q2 a.
"Explain why the resistance between B and C is less than the resistance between A and B when switch S is closed"
...Should I go back to school?