Test light

A test light is like a special tool that helps people see if something is working properly. It's like a magic wand that has a light bulb on one end and a wire on the other.

To use a test light, you first need to put the wire onto the part you want to check. For example, if you want to see if a light bulb is working, you would put the wire onto the metal part of the light bulb.

Then, you turn on the test light by putting the other end of the wand into a power source, such as the battery of a car. If the light bulb on the wand glows, it means that there is power going through the wire and the part you're checking is working properly.

If the light bulb doesn't glow, it means that there may be a problem with the part you're checking. This helps people figure out what needs to be fixed and make sure everything is safe and working as it should.