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3 cards from this section. Quick, good the night before a test.
What is the formula for calculating power in terms of current and voltage?
Remember, power is the product of current and voltage.
Define EMF in an electrical circuit.
Think of how batteries are rated.
What does EMF stand for?
It’s measured in volts and relates to battery capabilities.
True or False: Increasing resistance always increases power loss in a circuit.
Think about how current and resistance interact.
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.
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.
Review the formulas related to EMF and voltage across resistors.
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