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Tutor HuntTest QuestionsPhysics QuestionsYear 10 Physics Questions

 

Magnetic Fields (GCSE Physics)

The following is a GCSE Physics test covering 'Magnetic Fields' from the broader topic Magnetism And Electromagnetism. The test is geared towards the AQA exam board style syllabus.
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Below a typical questions that will be covered in this test. You final score will be logged on your account

Which equation links the turns ratio (Ns/Np) to the voltage ratio (Vs/Vp) in an ideal transformer?
What is the equation linking force (F), magnetic flux density (B), current (I) and length of wire (L) in a uniform magnetic field perpendicular to the wire?
What does a commutator do in a simple dynamo or DC generator?
What is the main reason step-up transformers are used at power stations before transmission along overhead lines?
An electromagnet’s coil is wound onto a soft iron core. If the current is switched off, why does the core lose most of its magnetism quickly?
A changing magnetic flux through a coil induces an emf. Which of these will NOT increase the induced emf in a coil?
In a loudspeaker, which effect causes the coil to move when an electric current passes through it in a magnetic field?
Which material makes the best core for an electromagnet used in a transformer to increase magnetic field strength?
Why is a laminated iron core used in large transformers rather than a single solid block of iron?
Which property makes soft iron a suitable core for electromagnets used in transformers and relays?
A coil of wire is moved rapidly into a region of strong magnetic field. Which of the following describes what happens?