ALTERNATING

BATTERIES

BRIDGE

CAPACITOR

CIRCUIT BREAKER

CURRENT

DIODE

DIRECT

ELECTRICITY

ELECTROMAGNET

ELECTRON

FREQUENCY COUNTER

FUNCTION GENERATOR

FUSE

GATES

GROUND

INDUCTOR

LED

MULTIMETER

NEGATIVE

OHMS LAW

OSCILLATOR

OSCILLOSCOPE

POSITIVE

RECTIFIER

RESISTOR

RESONATOR

RHEOSTAT

SEMICONDUCTOR

SILICON

SOLDER

SWITCH

THERMISTOR

TRANSFORMER

VACUUM TUBE

VOLTAGE

WATTAGE