7 min read
This study guide covers electrical power in circuits, including the definition of power as the rate of energy transfer. It explains the core equations: P=IV, P=I²R, and P=V²/R, along with the relationship between power and energy (E=Pt). Practice problems (multiple-choice, short answer, and free response) are provided with solutions and explanations. Finally, exam tips emphasize mastering the equations, problem-solving skills, and FRQ strategies.
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Question 1 of 9
A circuit has a voltage of 10 V and a current of 2 A. What is the power dissipated in the circuit? 💡
5 W
10 W
20 W
100 W