Practice Behavior of AC in a Resistor, Inductor, and Capacitor - 9.4 | 9. Alternating Current | ICSE Class 11 Electricity and Electronics
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9.4 - Behavior of AC in a Resistor, Inductor, and Capacitor

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Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is the formula for calculating RMS current through a resistor?

πŸ’‘ Hint: Think about Ohm’s Law.

Question 2

Easy

In what phase relationship does AC current in a resistor operate?

πŸ’‘ Hint: Recall the definition of being in phase.

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 formula represents the RMS current in a resistor?

  • I_RMS = V_RMS / R
  • I_RMS = R / V_RMS
  • I_RMS = V_RMS Γ— R

πŸ’‘ Hint: Consider how voltage, current, and resistance are interrelated.

Question 2

True or False: In AC, current lags voltage by 90 degrees in a capacitor.

  • True
  • False

πŸ’‘ Hint: Think about the phase differences in AC circuits.

Solve 1 more question and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You have a circuit with a resistor (120Ξ©), an inductor (0.5H), and a capacitor (50ΞΌF) all in series. If the AC source operates at 60Hz, calculate the overall impedance and the RMS current supplied by a 240V source.

πŸ’‘ Hint: Keep in mind to analyze the phase relationships before calculation.

Question 2

A circuit consists of a 100Ξ© resistor and a capacitor (C) in series with an AC source of 50Hz. If the current lags the voltage by 45 degrees, determine the required capacitive reactance.

πŸ’‘ Hint: Sketch the phase angle to visualize.

Challenge and get performance evaluation