Eduqas A Level Physics
Eduqas A Level Physics 3.10 Electromagnetic Induction Exam Questions
Free Eduqas A Level Physics exam questions on 3.10 Electromagnetic Induction, with mark schemes. Covers magnetic flux, Faraday's and Lenz's laws, and induced emf.
3.10 Electromagnetic Induction 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.
StemUp mark scheme flashcards
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.
View flashcards
About Eduqas A Level Physics 3.10 Electromagnetic Induction
This topic covers generating emf.
What you need to know
- Flux Φ = BA cos θ; flux linkage NΦ.
- Faraday's law Emf equals rate of change of flux linkage.
- Lenz's law The induced current opposes the change producing it.
- Applications Moving rods, coils and generators.
Common mistakes in 3.10 Electromagnetic Induction
- Confusing flux and flux density.
- Forgetting N for flux linkage.
- Not linking Lenz's law to energy conservation.
Try three 3.10 Electromagnetic Induction exam-style questions
1. A 200 turn coil sees flux change by 3.0 x 10⁻³ Wb in 0.10 s. Find the emf. (1 mark)
Show the mark scheme answer
6.0 V.
2. State Lenz's law. (1 mark)
Show the mark scheme answer
The induced emf acts to oppose the change causing it.
3. Explain why a magnet falls slowly through a copper tube. (2 marks)
Show the mark scheme answer
Changing flux induces eddy currents (1) whose fields oppose the motion (1).
3.10 Electromagnetic Induction FAQs
What does Electromagnetic Induction cover?
Flux, Faraday's and Lenz's laws.
What is a weber?
The unit of magnetic flux, T m².
Why is Lenz's law about energy?
Opposition means work must be done to induce a current.
Revise this topic with flashcards: A Level Physics Flashcards, with mark scheme answers for Anki and Quizlet.
