Multiple ChoiceThe 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?410views3rank
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 800W and the coffee machine uses 600W, what is the maximum power the microwave could use without tripping the circuit breaker?209views