Question 131Electricity & Electronics - Assistant Engineer

The correct answer is B) circuit resistance. An ohmmeter is a device used to measure the resistance (in ohms) of a circuit or component. It works by passing a known current through the circuit or component and measuring the voltage drop, which can then be used to calculate the resistance according to Ohm's law (Resistance = Voltage / Current). The other answer choices are incorrect because: A) An voltmeter is used to measure voltage, not an ohmmeter. C) A wattmeter is used to measure power, not an ohmmeter. D) An ammeter is used to measure current flow, not an ohmmeter.