Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Magnetism and Electromagnetism
Explain why a compass needle placed just outside one end of a current-carrying solenoid lines up parallel to the solenoid's axis.
- 2Magnetism and the Motor Effect
In a simple d.c. electric motor, state the name and function of the component that reverses the current in the coil every half turn.
- 3Electromagnetic Induction and Transformers
A transformer has 500 turns on its primary coil and 2500 turns on its secondary coil. State, with a reason, whether this is a step-up or a step-down transformer.
- 4Space Physics
State what happens to the orbital speed needed for a stable orbit as the orbital radius increases.
- 5The Solar System, Orbital Motion and Satellites
State one difference between a moon and an artificial satellite.
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