WJEC A Level Physics
WJEC A Level Physics 2.1 Conduction of Electricity Exam Questions
Free WJEC A Level Physics exam questions on 2.1 Conduction of Electricity, with mark schemes. Covers charge, current, drift velocity and potential difference.
2.1 Conduction of Electricity exam questions
1 question pack of real past exam questions with its mark scheme. Answer every question without notes, then mark your answers line by line against the mark scheme.
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A Level Physics Flashcards
Every answer is written in mark scheme wording, so you learn exactly what examiners give marks for. Pick your exam board, then test yourself with the questions on this page.
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About WJEC A Level Physics 2.1 Conduction of Electricity
This topic introduces electric current.
What you need to know
- Current I = ΔQ/Δt.
- Drift velocity I = nAve.
- Charge carriers Electrons in metals; ions in electrolytes.
- Potential difference Energy transferred per unit charge, V = W/Q.
Common mistakes in 2.1 Conduction of Electricity
- Forgetting n is per cubic metre.
- Confusing drift speed with signal speed.
- Mixing up emf and pd.
Try three 2.1 Conduction of Electricity exam-style questions
1. A current of 0.40 A flows for 2.0 minutes. Find the charge. (1 mark)
Show the mark scheme answer
48 C.
2. Explain why drift velocity is greater in a thinner section of wire. (2 marks)
Show the mark scheme answer
Current is the same throughout (1), so smaller A needs a larger v in I = nAve (1).
3. Define the volt. (1 mark)
Show the mark scheme answer
One joule per coulomb.
2.1 Conduction of Electricity FAQs
What does Conduction of Electricity cover?
Current, charge, drift velocity and pd.
Why are semiconductors different?
They have far fewer charge carriers per unit volume.
Is current used up in a circuit?
No, charge is conserved.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
