III = current, VVV = voltage, RRR = resistance
By considering bounds, work out the value of R R\,R to a suitable degree of accuracy. Give a reason for your answer.
Practise OCR GCSE Maths Bounds with exam-style questions for Foundation and Higher tier. 52 questions, matched to the OCR GCSE Maths (J560) specification and written in the written papers style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.