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Electricity and Magnetism

Quick questions on Electromagnetic induction explained: H2 Physics Electricity and Magnetism

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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Define magnetic flux and state its unit. [2 marks]
What is q2?
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A coil of 100100 turns experiences a flux change of 2.0×103 Wb2.0 \times 10^{-3}\ \text{Wb} per turn in 0.040 s0.040\ \text{s}. Find the induced e.m.f. [2 marks]
What is q3?
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Explain how Lenz's law is a consequence of conservation of energy. [3 marks]

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