Final answer:
An ohmmeter is the tool used to measure voltage, current, and resistance when working with computers.
Step-by-step explanation:
An ohmmeter is the tool used to measure voltage, current, and resistance when working with computers.
An ohmmeter is an instrument that applies a voltage to a resistance, measures the current, and calculates the resistance using Ohm's law. It then provides a readout of the calculated resistance.
Ohm's law states that the voltage (V) across a component is equal to the current (I) through the component multiplied by the resistance (R) of the component: V = IR.