A resistor has a potential difference (p.d.) of $100\,\text{V}$ across it and a current of $5.0\,\text{mA}$ flows through it. What is the resistance of the resistor?
- A$0.50\,\Omega$
- B$20\,\Omega$
- C$500\,\Omega$
- D$20\,000\,\Omega$
Physics 0625 · IGCSE · Electrical quantities