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2 cards from this section. Quick, good the night before a test.
Define RMS Current in an AC circuit.
Think about the average power compared to DC.
What is the formula for power dissipation in a resistor in an AC circuit?
Consider Ohm's Law and energy dissipation.
What is the relationship between current and voltage in a resistive AC circuit?
Consider the waveforms together.
True or False: The average power consumed in a purely resistive AC circuit can be zero.
Think about instant values over a full cycle.
A circuit has a resistor of 10Ω and connects to an AC voltage source of 230V peak value. Calculate the average power dissipated in it.
Use RMS values for power calculations.
An AC circuit with an rms voltage of 120V and a resistant load of 40Ω is in the circuit. Calculate the rms current and total power consumed.
Utilize Ohm's Law to find current before calculating power.
4 more questions in this section. Enroll free to practise them all.
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