IGCSE Physics Circuit Symbols With Pictures Conductors crossing with no connection Junction between connectors Brainpower Read More Open switch Closed switch Open push switch Closed push switch Cell Battery of cells Power supply (ac and dc) Transformer Ammeter Milliammeter Voltmeter Fixed resistor Variable resistor Heater Thermistor Light Dependent Resistor (LDR) Relay Diode Light Emitting Diode (LED)
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