Practice Ohm’s Law and Resistivity - 5.2 | Theme B: The Particulate Nature of Matter | IB MYP Grade 11 Physics
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5.2 - Ohm’s Law and Resistivity

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for Ohm's Law?

💡 Hint: Remember the three variables: voltage, current, and resistance.

Question 2

Easy

If the resistance is 5 Ω and the current is 2 A, what is the voltage?

💡 Hint: Use Ohm's formula to find voltage.

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 does Ohm's Law state?

  • Voltage is proportional to resistance.
  • Current is proportional to resistance.
  • Voltage is proportional to current times resistance.

💡 Hint: Remember the relationship defined by the formula.

Question 2

True or False: Higher resistivity means a material is a better conductor.

  • True
  • False

💡 Hint: Think about how resistance works.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A resistive heater made of nichrome wire has a resistivity of 1.10 × 10⁻⁶ Ω·m. If the wire is 5 m long and has a cross-sectional area of 2 × 10⁻⁶ m², calculate the resistance of the wire.

💡 Hint: Understand the relationship between resistivity, length, and cross-sectional area.

Question 2

If a 12 V battery connected to a resistor of 4 Ω is used, what is the current through the resistor? Then find out the total energy dissipated in the resistor in 10 seconds.

💡 Hint: Determine first the current, and then use the power formula.

Challenge and get performance evaluation