Which tool measures current, voltage, and resistance?

Which tool measures current, voltage, and resistance?

• A. Clamp meter
• B. Wire strippers
• C. Multimeters
• D. Conduit bender

Answer: (C)

A tool that can read several electrical quantities in one device is essential for diagnosing circuits. A multimeter is designed to measure voltage, current, and resistance. For voltage, you place the probes across the component to read the potential difference (DC or AC depending on the setting). For current, you either insert the meter in series with the circuit so the current flows through it (or use a current clamp if the meter has that feature) to read the amperage. For resistance, you first power off the circuit, then touch the probes across the resistance to determine how much opposition to current flow there is, shown in ohms. This versatility is why the multimeter is the best choice for measuring current, voltage, and resistance. Clamp meters mainly measure current (often with a clamp around a conductor) and may not reliably measure resistance or voltage in all models, while wire strippers and conduit benders do not measure electrical properties.

A tool that can read several electrical quantities in one device is essential for diagnosing circuits. A multimeter is designed to measure voltage, current, and resistance. For voltage, you place the probes across the component to read the potential difference (DC or AC depending on the setting). For current, you either insert the meter in series with the circuit so the current flows through it (or use a current clamp if the meter has that feature) to read the amperage. For resistance, you first power off the circuit, then touch the probes across the resistance to determine how much opposition to current flow there is, shown in ohms. This versatility is why the multimeter is the best choice for measuring current, voltage, and resistance. Clamp meters mainly measure current (often with a clamp around a conductor) and may not reliably measure resistance or voltage in all models, while wire strippers and conduit benders do not measure electrical properties.