Electric circuits, resistance and components

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Draw and interpret circuit diagrams using standard symbols (cell, battery, switch, resistor, variable resistor, lamp, diode, LED, fuse, ammeter, voltmeter, thermistor, LDR)
Use Q = It and V = IR, and explain current as a flow of charge and resistance as opposition to current
Required practicals: investigate how the length of a wire and combinations of resistors affect resistance, and plot the I–V characteristics of a fixed resistor, filament lamp and diode

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Describe how the resistance of thermistors and LDRs changes with temperature and light, and their use in sensing circuits; (OCR, Cambridge) describe static electricity and electric fields

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