When the current in a high-precision graphene-based strain gauge is 0.075 A, the resistance of the gauge is 240 Ω.
Calculate the potential difference across the strain gauge.
Use the equation:
potential difference=current×resistance \text{potential difference} = \text{current} \times \text{resistance} potential difference=current×resistance59 exam-style questions on Edexcel GCSE Physics 10.2 Resistance. Each one has a worked solution and a mark scheme showing where the marks go.