load test
load test
voltmeter
voltmeter
Consider a battery for a moment. A battery can be a source or sink type of power source. A light bulb would be considered a source current. When a battery or other item is being charged is it considered a sinking source.
Its a power source such as a battery - Wire from the Positive on the battery to one contact on the lamp and a wire from the Negative of the battery to the other contact on the bulb
The battery or other power supply that energizes the circuit is.
A voltaic cell (battery) will do that.
This can occur due to a light remaining on or some other electric device is using energy from the battery. The electrical system must be evaluated to determine the source of the parasitic draw. Typically however, if the source cannot be obtained, the battery is considered bad.
an electric circuit consists of a voltage source (like a battery), something to use up some of the voltage to keep it from short circuiting ( like a light bulb or a motor), and wires to connect the positive end of the battery to the light bulb or other device, then more wire to connect the other part of the bulb to the negative end of the battery.
what
A Battery
Unless you have some other source of information, your only option is to measure it - possibly using a protractor.