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AQA 3.7 Fields
3.7.1 Fields (A-level only)
- Concept of a force field
- Similarities and differences between gravitational and electrostatic forces
- Differences between gravitational and electrostatic forces
3.7.2 Gravitational fields (A-level only)
- 3.7.2.1 Newton's law
- 3.7.2.2 Gravitational field strength
- 3.7.2.3 Gravitational potential
- 3.7.2.4 Orbits of planets and satellites
3.7.3 Electric fields (A-level only)
- 3.7.3.1 Coulomb's law
- 3.7.3.2 Electric field strength
- 3.7.3.3 Electric potential
3.7.4 Capacitance (A-level only)
- 3.7.4.1 Capacitance
- 3.7.4.2 Parallel plate capacitor
- 3.7.4.3 Energy stored by a capacitor
- 3.7.4.4 Capacitor charge and discharge
3.7.5 Magnetic fields (A-level only)
- 3.7.5.1 Magnetic flux density
- 3.7.5.2 Moving charges in a magnetic field
- 3.7.5.3 Magnetic flux and flux linkage
- 3.7.5.4 Electromagnetic induction
- 3.7.5.5 Alternating currents
- 3.7.5.6 The operation of a transformer
Required Practicals
- Required practical 9: Investigation of the charge and discharge of capacitors. Analysis techniques should include log-linear plotting leading to a determination of the time constant, RC
- Required practical 10: Investigate how the force on a wire varies with flux density, current and length of wire using a top pan balance.
- Required practical 11: Investigate, using a search coil and oscilloscope, the effect on magnetic flux linkage of varying the angle between a search coil and magnetic field direction