Practice - Electrical Power and Energy
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Practice Questions
Test your understanding with targeted questions
What is the unit of electrical power?
💡 Hint: Think of common household appliances.
What is the formula for calculating power?
💡 Hint: It's about voltage and current.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the unit of electrical power?
💡 Hint: Remember the definitions of energy units.
True or False: Power is the rate of energy consumed over time.
💡 Hint: Think about energy in electrical systems.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Design a circuit that operates at 12 V and provides 3 A of current. Calculate the total power and how much energy is consumed in 4 hours.
💡 Hint: Remember to convert hours to seconds for energy.
A resistor of 15 Ω is connected to a 60 V source. Calculate its power, and if it runs for 5 minutes, how much energy is dissipated?
💡 Hint: Keep using P = V² / R for power calculation, then E = P * Δt.
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Reference links
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