B.5.5 - Power in Electrical Circuits
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Practice Questions
Test your understanding with targeted questions
What is the formula for electrical current?
💡 Hint: Think of charge and time.
In what units is voltage measured?
💡 Hint: What is electric potential difference's unit?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the standard unit of power in electrical circuits?
💡 Hint: What is used to describe energy use per unit time?
True or False: In a series circuit, the voltage is the same across all components.
💡 Hint: Consider how voltage behaves in series compared to parallel.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
A series circuit has three resistors: R1 = 2Ω, R2 = 3Ω, and R3 = 5Ω, with an applied voltage of 12V. Calculate the total power consumed by the circuit.
💡 Hint: Calculate total resistance first, then find current and finally power.
If a parallel circuit contains a 10Ω and a 5Ω resistor, what is the current flowing if 20V is supplied across the circuit?
💡 Hint: Use the formula for equivalent resistance in parallel circuits.
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