Home > Subjects > Physics > Level 3 > 3.6 Electrical systems > Subject content
- Subject: Physics
- AS: AS90523
- Level: 3
- Credits: 6
- External
Physics 3.6 Demonstrate understanding of electrical systems
Subject content
The topics of electrical systems, that you may be assessed on will include:
- DC circuits and capacitance:
- internal resistance
- simple application of Kirchhoff's laws
- parallel plate capacitor
- capacitance
- dielectrics
- series and parallel capacitors
- charge/discharge characteristics of capacitors in DC RC circuits
- voltage/time and current/time graphs for a capacitor
- time constant
- energy stored in a capacitor.
- Electromagnetic induction and AC circuits:
- magnetic flux
- magnetic flux density
- Faraday's Law
- Lenz's law
- voltage/time and current/time graphs for an inductor
- time constant
- self inductance
- the inductor
- energy stored in an inductor
- mutual inductance
- the transformer
- the comparison of the energy dissipation in a resistor carrying direct current and alternating current
- peak and rms voltage and current
- phase
- phasors in AC
- reactance and impedance and their frequency dependence in a series circuit
- voltage and current and their phase relationship in LR and CR series circuits
- resonance in LCR circuits.
And the relationships you should know and practise, with respect to electrical systems, are:
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You will find excellent revision on the topics with practice showing step-by-step solutions from the Physics pages on S-Cool!.
Practise your understanding of significant figures.
