Which instrument is used to measure voltage?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Get ready for the NCCER Introduction to Electrical Circuits exam. Study with multiple choice questions, each question comes with hints and explanations. Ace your exam with confidence!

Multiple Choice

Which instrument is used to measure voltage?

Explanation:
Voltage is the potential difference between two points in a circuit. To measure it, you use a voltmeter, which is designed to connect across the two points (in parallel) and has a very high internal resistance so it draws almost no current. This keeps the circuit operating normally while you read the voltage. The other instruments are for different measurements: an ammeter measures current and sits in series with a load, with low resistance; an ohmmeter measures resistance by applying a small test current to a component; a wattmeter measures power, which requires measuring both voltage and current. So, for measuring voltage, the voltmeter is the appropriate instrument.

Voltage is the potential difference between two points in a circuit. To measure it, you use a voltmeter, which is designed to connect across the two points (in parallel) and has a very high internal resistance so it draws almost no current. This keeps the circuit operating normally while you read the voltage. The other instruments are for different measurements: an ammeter measures current and sits in series with a load, with low resistance; an ohmmeter measures resistance by applying a small test current to a component; a wattmeter measures power, which requires measuring both voltage and current. So, for measuring voltage, the voltmeter is the appropriate instrument.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy