D: 2.0 × 10⁻⁴ m
Oracle Prep sorts past-paper questions by topic, so you can drill Electricity and see which topics are most likely to come up next.
Sign up free →Questions and mark schemes are from past examination papers and remain the copyright of the exam board. How Oracle Prep builds its content
Use band theory to explain why, unlike a copper wire, the resistance of an intrinsic semiconductor decreases with an …
A resistor has resistance R. When the potential difference across the resistor is V, the current in the resistor is I…
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 t…
Forces of 3 N, 4 N and 5 N act at one point on an object. The angles at which the forces act can vary. What is the va…
An object, immersed in a liquid in a tank, experiences an upthrust. What is the physical reason for this upthrust?
A force of 1000 N is needed to lift the hook of a crane at a steady velocity. The crane is then used to lift a load o…