18:45Electrical Current Explained - AC DC, fuses, circuit breakers, multimeter, GFCI, ampereThe Engineering Mindset460views
11:30Alternating Current vs Direct Current - Rms Voltage, Peak Current & Average Power of AC CircuitsThe Organic Chemistry Tutor489views
Multiple ChoiceAn AC source produces an alternating current in a circuit with the function i(t)=(1.5A)cos[(250s−1)t]i\left(t\right)=\left(1.5A\right)\cos\left\lbrack\left(250s^{-1}\right)t\right\rbracki(t)=(1.5A)cos[(250s−1)t]. What is the frequency of the source? What is the maximum current in the circuit?413views3rank1comments
Multiple ChoiceThe current in an AC circuit takes 0.02 s to change direction. What is the angular frequency of the AC source?452views2rank2comments
Multiple ChoiceAn AC emf source is given byε=(170V)cos{2π(60Hz)t}. What is the instantaneous emf of this source at t=97ms?338views
Multiple ChoiceAn AC emf source is given by ℰ=(170 V)cos(2π(60Hz)t). What is the instantaneous emf of this source at t=97ms ?270views
Multiple ChoiceIf Vrms=120 V for a certain 60 Hz outlet, what is the peak voltage across the outlet?291views
Textbook QuestionA sinusoidal current i = I cosωt has an rms value I_rms = 2.10 A. (a) What is the current amplitude?194views
Textbook QuestionSuppose a current is given by the equation I = 1.40 sin 210t , where I is in amperes and t in seconds.(a)What is the frequency?13views