| CIRCUIT MEASURING DEVICES - THE AMMETER | ||
The circled “A” shown here is the symbol for an ammeter. An ammeter is a device that measures current. In effect, it’s kind of a smart wire that can measure the current flowing through it. The name "ammeter" comes from the fact that it is a meter used to measure current (in amperes), and thus is called an AMpere METER, or AMMETER. As Ohm's Law shows, the current in this circuit with 6 volts across a 6-ohm resistor is 1 ampere, which is exactly what our ammeter should measure. |
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