Question 4 • (OC27) Earth/Space Sci-2001310-S2-Nelson
A current is generated when the magnetic flux through a solenoid changes. Moving a magnet into or out of a solenoid changes the magnetic field through its coils, so A and B generate current. Moving a solenoid in a magnetic field can also change the flux through it, so E applies. Holding the magnet steady inside the solenoid or holding the solenoid steady outside the magnet does not change the flux, so C and D do not generate current.
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