Loop-Back Plug
MRI or a urine test.
A soldering tool can be used to replace faulty components on the computers circuit board.
A multimeter is a tool that can be used to test for electrical conductivity. It can measure resistance, voltage, and current flow in an electrical circuit.
Port Scanner
test tubes
test tubes...
hammer
A multimeter.
ohm meterbuzz boxlamp & batteryetc.
The tool that can be used to test for electrical conductivity is called a multimeter. It can measure various electrical parameters, including conductivity, voltage, and resistance.
A quick test I've always used is to start the car. Remove the neutral cable from the battery. If the car still runs your alternator is fine.
testing a light bulb? - a multimeter on the power socket. To test a bulb you look at it and if it shines...