Practice Power in AC Circuits - 9.5 | 9. Alternating Current | ICSE 11 Electricity and Electronics
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Power in AC Circuits

9.5 - Power in AC Circuits

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Learning

Practice Questions

Test your understanding with targeted questions

Question 1 Easy

What is the formula for instantaneous power?

💡 Hint: Remember, it involves voltage and current at a single moment.

Question 2 Easy

Define average power in an AC circuit.

💡 Hint: Think of it as a measure over time.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

Question 1

What formula is used to calculate instantaneous power?

P(t)=V(t) + I(t)
P(t)=V(t) ⋅ I(t)
P(t)=V(t)/I(t)

💡 Hint: Think about how power is connected to both voltage and current.

Question 2

A power factor of 1 means that:

True
False

💡 Hint: Recall the definition of power factor and its implications.

2 more questions available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

In an AC circuit with maximum voltage of 120V and phase difference of 30 degrees, calculate the average power if the RMS current is 10A.

💡 Hint: Use the formula for average power!

Challenge 2 Hard

An AC appliance consumes 1500W with a power factor of 0.6. What type of load is it?

💡 Hint: Recall characteristics of inductive and capacitive loads.

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Reference links

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