Practice Voltmeter Use - 4.2 | Electricity & Circuits | IB IMYP Grade 8 Physics
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4.2 - Voltmeter Use

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the primary function of a voltmeter?

πŸ’‘ Hint: Think about what we measure in electrical terms.

Question 2

Easy

How should a voltmeter be connected in a circuit?

πŸ’‘ Hint: Remember the phrase 'Parallel for potential'.

Practice 4 more questions and get performance evaluation

Interactive Quizzes

Engage in quick quizzes to reinforce what you've learned and check your comprehension.

Question 1

What is the primary function of a voltmeter?

  • Measure current
  • Measure resistance
  • Measure voltage

πŸ’‘ Hint: Focus on the role of the device.

Question 2

True or False: A voltmeter should be connected in series.

  • True
  • False

πŸ’‘ Hint: Think about how we want the voltmeter to interact with the circuit.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You recorded a voltage of 8.5 V across a resistor using a voltmeter that has an internal resistance of 20 kΞ© in a circuit with a total series resistance of 100 kΞ©. Calculate the actual voltage across the resistor and discuss the implications.

πŸ’‘ Hint: Consider how much current flows and how parallel resistance affects readings.

Question 2

A voltmeter connected across a resistor with a high resistance reads 11 V. If the resistor is actually part of a circuit supplying 24 V total, what could be happening? What would you expect to happen if you change to a higher resistance voltmeter?

πŸ’‘ Hint: Think about how voltmeter specifications might lead to differences in readings.

Challenge and get performance evaluation