1.1 - Key Terms
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Practice Questions
Test your understanding with targeted questions
What is the unit of voltage?
💡 Hint: Think of electrical pressure.
Define current.
💡 Hint: What moves in an electric circuit?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the unit of measure for resistance?
💡 Hint: Think of what 'limits' the current.
Ohm's law states that V = I × R. What does 'R' stand for?
💡 Hint: It’s what 'resists' the flow of current.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design a basic circuit using an LED, resistors, and a battery. Calculate the appropriate resistance needed to prevent the LED from burning out when powered by a 9V battery.
💡 Hint: Focus on the voltage drop across the LED.
A circuit has a current of 3A flowing through a resistor of 6 ohms. Calculate the voltage across the resistor and verify if this is a safe range for common components.
💡 Hint: Remember to check component ratings, especially capacitors and LEDs.
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