Which device is typically used for measuring electrical resistance?

The device specifically designed for measuring electrical resistance is the ohmmeter. This instrument directly measures resistance in ohms by applying a known voltage to a resistor and measuring the resulting current that flows through it. Ohm's Law, which relates voltage (V), current (I), and resistance (R), allows the ohmmeter to calculate resistance accurately.

In contrast to this, a voltmeter measures the voltage across a component in a circuit, which does not provide information about the resistance directly. An ammeter measures the current flowing through a circuit, and while it can be used in conjunction with a voltmeter to deduce resistance using Ohm's Law, it does not measure resistance outright. A wattmeter measures electrical power in watts, which is a different parameter altogether and does not relate directly to measurement of resistance. Each of these devices plays a distinct role in electrical measurements, but the ohmmeter's primary function is to assess resistance.