Physics (AS & A Level) · May / June 2021 · Paper 12 · Question 35
9702Resistance and resistivity
A wire of resistance 9.55 Ω has a diameter of 0.280 mm. It is made of metal of resistivity 4.90 × 10⁻⁷ Ω m. What is the length of the wire?
- A1.20 m
- B4.80 m
- C19.0 m
- D76.0 m
As printed in the paper
Show the answer
Correct answer: A. 1.20 m
Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.