Section 2 Electricity
Notes
Electric circuit symbols
It is important to become familiar with the following electric circuit symbols for the rest of this topic.You have to be able to recognise and draw them.

conductor

thermistor

cell

diode

battery of cells

light-emitting diode

d.c. power supply

ammeter

a.c. power supply

voltmeter

junction of conductors

lamp

earth or ground

motor

switch

generator

fuse or circuit breaker

loudspeaker

fixed resistor

microphone

variable resistor

transformer

light-dependent resistor

heater

electric bell