Which change will reduce energy losses due to eddy currents in the core of a transformer?
Using thinner iron laminations to construct the core.
Decreasing the diameter of the copper wire in the secondary winding.
Increasing the frequency of the alternating current input.
Aligning the primary and secondary coils further apart from each other.
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.