3.9 - ELECTRICAL ENERGY POWER
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Practice Questions
Test your understanding with targeted questions
What is the formula for calculating power in terms of current and voltage?
💡 Hint: Remember, power is the product of current and voltage.
Define EMF in an electrical circuit.
💡 Hint: Think of how batteries are rated.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What does EMF stand for?
💡 Hint: It’s measured in volts and relates to battery capabilities.
True or False: Increasing resistance always increases power loss in a circuit.
💡 Hint: Think about how current and resistance interact.
1 more question available
Challenge Problems
Push your limits with advanced challenges
A conductor has a resistance of 2Ω, and a voltage of 12V is applied across it. Calculate the current flowing through the conductor and the power dissipated.
💡 Hint: Follow through Ohm's law for current and then use it to find power.
Explain how internal resistance in a battery affects the overall voltage delivered to an external load when the battery is under load.
💡 Hint: Review the formulas related to EMF and voltage across resistors.
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