Bennett Mechanical Comprehension Practice Test 2025 – The Complete All-in-One Guide to Exam Success!

Using a multimeter is the typical choice for measuring voltage across a component in a circuit. A multimeter is a versatile instrument that can measure various electrical properties, including voltage, current, and resistance. When measuring voltage, the multimeter is connected in parallel to the component, allowing it to measure the potential difference between two points without significantly affecting the circuit's operation.

Other instruments mentioned can measure electrical parameters but are not suitable for voltage measurement in the same way as a multimeter. A coulometer is primarily used to measure the amount of charge transferred in electrochemical reactions and does not measure voltage directly. An ammeter is designed to measure current and must be connected in series with a circuit, which is not suitable for measuring voltage. An oscilloscope, while capable of displaying voltage waveforms, is more complex and generally used for analyzing changing voltages rather than direct measurements of steady-state voltage across a component.