Practice - Impedance of a Capacitor (ZC)
Practice Questions
Test your understanding with targeted questions
Define capacitive reactance.
💡 Hint: What does the formula XC involve?
What is the phase relationship between current and voltage in a capacitive circuit?
💡 Hint: What direction does the current move compared to the voltage?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for capacitive reactance?
💡 Hint: Think about how frequency and capacitance relate to opposition.
True or False: In a purely capacitive circuit, the voltage leads the current.
💡 Hint: Think about who reaches its peaks first.
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Challenge Problems
Push your limits with advanced challenges
A 470µF capacitor is connected across a 120V AC supply operating at 60Hz. Calculate the capacitive reactance and the current flowing through it.
💡 Hint: Calculate XC first and then apply Ohm's Law for AC.
An AC circuit consists of a 10µF capacitor connected to a 50Hz supply. Calculate the impedance and current if the source voltage is 230V.
💡 Hint: Don't forget to convert XC into a complex number before finding current.
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Reference links
Supplementary resources to enhance your learning experience.