What tool is commonly used to check the voltage and current in electrical appliances?

The multimeter is frequently used to measure both voltage and current in electrical appliances, making it an essential tool for technicians. This versatile device can perform a variety of functions, including measuring AC and DC voltage, as well as current in both forms. It typically features different settings that allow the user to select the specific measurement they wish to take, providing precise readings that are crucial for diagnosing and troubleshooting electrical issues within appliances.

While tools like a voltage tester can only measure voltage, the multimeter provides a more comprehensive capability by also checking current and resistance. This makes it indispensable for appliance service technicians who need to evaluate the overall electrical health of appliances. The other tools listed, such as a pry bar or torque wrench, serve different purposes unrelated to electrical measurements, thus highlighting the multimeter's critical role in electrical diagnostics.