5 - Activities and Numerical Investigations
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Practice Questions
Test your understanding with targeted questions
What is the current when using a 9V battery in a 100 Ω series circuit?
💡 Hint: Use Ohm's law I = V/R.
If you have 3 branches with resistance of 220 Ω each in a parallel circuit, what is the equivalent resistance?
💡 Hint: Use the formula R_eq = R/n.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What happens to current when resistance increases in a series circuit?
💡 Hint: Think about how the circuit behaves when more resistance is added.
In a parallel circuit, as you add more branches, what happens to the total current?
💡 Hint: Remember that current can travel through multiple paths in a parallel circuit!
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Challenge Problems
Push your limits with advanced challenges
In a series circuit with 50 Ω, 100 Ω, and 150 Ω connected to a 9V battery, calculate the total current. Discuss possible errors in measurement.
💡 Hint: Ensure you correctly add series resistances.
A circuit consists of three resistors in parallel (30 Ω, 60 Ω, and 90 Ω). Calculate the total resistance and the current when connected to a 12V battery.
💡 Hint: Use the formula for parallel resistances carefully.
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Reference links
Supplementary resources to enhance your learning experience.