Practice Material (Resistivity, ρ) - 5.2.6.2 | Module 5: Electricity and Magnetism | IB Board Grade 9 Physics
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5.2.6.2 - Material (Resistivity, ρ)

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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is resistivity?

💡 Hint: Think about what happens to electricity in different materials.

Question 2

Easy

Why do metals like copper have low resistivity?

💡 Hint: Consider the structure of metals.

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 resistivity measure?

  • The temperature of a material
  • The concentration of electric charges
  • The opposition to electric current flow

💡 Hint: Think about how different materials interact with electricity.

Question 2

True or False: Higher resistivity means better conductivity.

  • True
  • False

💡 Hint: Consider what happens with insulators versus conductors.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

If a material behaves like an insulator with a resistivity of 1 × 10^7 ohm-m, how might its resistivity change if the temperature increases significantly? Provide reasoning.

💡 Hint: Consider the relationship between particle movement and conductivity.

Question 2

A 15-meter long wire has a cross-sectional area of 3 mm² and a resistivity of 5 x 10^-8 ohm-m. Calculate the resistance and discuss how altering the length or area would affect it.

💡 Hint: Rely on the resistance formula for calculations while recalling how dimensions influence resistance.

Challenge and get performance evaluation