Practice AC Voltage Applied to a Resistor - 7.2 | 7. ALTERNATING CURRENT | CBSE 12 Physics Part 1
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

Define RMS Current in an AC circuit.

πŸ’‘ Hint: Think about the average power compared to DC.

Question 2

Easy

What is the formula for power dissipation in a resistor in an AC circuit?

πŸ’‘ Hint: Consider Ohm's Law and energy dissipation.

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 is the relationship between current and voltage in a resistive AC circuit?

  • Current lags voltage
  • Voltage lags current
  • They are in phase

πŸ’‘ Hint: Consider the waveforms together.

Question 2

True or False: The average power consumed in a purely resistive AC circuit can be zero.

  • True
  • False

πŸ’‘ Hint: Think about instant values over a full cycle.

Solve and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

A circuit has a resistor of 10Ξ© and connects to an AC voltage source of 230V peak value. Calculate the average power dissipated in it.

πŸ’‘ Hint: Use RMS values for power calculations.

Question 2

An AC circuit with an rms voltage of 120V and a resistant load of 40Ξ© is in the circuit. Calculate the rms current and total power consumed.

πŸ’‘ Hint: Utilize Ohm's Law to find current before calculating power.

Challenge and get performance evaluation