Final answer:
To measure voltage, one uses a voltmeter; for current, an ammeter is appropriate; and resistance is measured using an ohmmeter. These instruments are essential for analyzing electrical circuits and are based on principles such as Ohm's law.
Step-by-step explanation:
To measure electrical properties such as voltage, amps (current), and resistance, one would use specific measuring instruments designed for each task. For voltage, you would use a voltmeter, an instrument that is connected in parallel with the component whose voltage you want to measure.
To measure current, you would use an ammeter, which is connected in series with the circuit. It's important to note that connecting a voltmeter in series or an ammeter in parallel with a component can lead to incorrect readings or damage the instruments. For resistance measurements, an ohmmeter is used, which is based on Ohm's law (R = V/I). Traditional ohmmeters would have their own internal voltage source and would measure the current flowing through the resistor. Modern digital meters often use a constant current source and measure the voltage difference to calculate resistance.