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Magnetic fields (A-level only)

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Question 37

The magnetic flux $Φ\Phi$ through a single-turn coil varies with time $t$ as follows:

From $0\text{ s}$ to $2\text{ s}$ , the flux is constant at $Wb6.0\text{ Wb}$ .
From $2\text{ s}$ to $5\text{ s}$ , the flux decreases linearly from $Wb6.0\text{ Wb}$ to $Wb0\text{ Wb}$ .
From $5\text{ s}$ to $7\text{ s}$ , the flux remains constant at $Wb0\text{ Wb}$ .
From $7\text{ s}$ to $8\text{ s}$ , the flux increases linearly from $Wb0\text{ Wb}$ to $Wb6.0\text{ Wb}$ .

Determine the induced electromotive force (emf), $E\mathcal{E}$ , in the coil during each of these four time intervals.

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Markscheme

Magnetic fields (A-level only) Questions

A Level
Physics
Magnetic fields (A-level only)

66 exam-style questions on AQA A Level Physics Magnetic fields (A-level only), covering Magnetic flux density (A-level only), Moving charges in a magnetic field (A-level only), Magnetic flux and flux linkage (A-level only), Electromagnetic induction (A-level only), Alternating currents (A-level only), and The operation of a transformer (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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