4.1 - Impedance (Z)
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Practice Questions
Test your understanding with targeted questions
Define impedance in the context of AC circuits.
💡 Hint: Think about resistance and reactance.
What is the formula for inductive reactance?
💡 Hint: Recall the relationship between frequency and inductance.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What does impedance in an AC circuit depend on?
💡 Hint: Think about what influences AC flow.
True or False: Resonance occurs when X_L is greater than X_C.
💡 Hint: Reflect on the definition of resonance.
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Challenge Problems
Push your limits with advanced challenges
Design an LCR circuit with a specific resonance frequency of 50 Hz, knowing you can use a 100 µF capacitor. Calculate the required inductance.
💡 Hint: Remember to rearrange the resonance formula.
A circuit has R = 10 Ω, L = 0.1 H, and C = 200 µF. Determine its phase angle at a frequency of 500 Hz.
💡 Hint: Use the calculated reactances to find the angle.
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