31. Alternating Current
Resistors in AC Circuits
31. Alternating Current
Resistors in AC Circuits
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- Multiple Choice
The voltage across a resistor is found to be given by v R (t) = (10 V) cos[(120 s−1)t]:
a) At what frequency does the AC course operate?
b) If the resistance is 12 Ω, what is the maximum current in this circuit?
c) What is the RMS voltage of the AC source?
506views5rank - Multiple ChoiceIn a kitchen in the United States, you turn on a toaster, a microwave, and a coffee machine at the same time. All are wired in parallel and are connected to a 20 A circuit breaker. If the toaster uses and the coffee machine uses what is the maximum power the microwave could use without tripping the circuit breaker?288views
- Textbook Question
(I) Calculate the peak current in a 2.5-k Ω resistor connected to a 220-V rms ac source.
68views - Textbook Question
Estimate the resistance of the 120-Vᵣₘₛ circuits in your house as seen by the power company, when
(a) everything electrical is unplugged, and
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