So I did a couple circuit questions and these two really have me stumped. One is on paye 613 of The cutnell physics sixth edition number 36. or: (one star) A light bulb is connected to a 120.0V wall socket. The current in the bbulb depends on the time t according to the relation I=(0.707 A)sin[(314HZ)t] a) what is the frequency of the alternating current b) determine the resistance of the bulb's filament c) what is the average power consumbed by the light bulb? from my guesses i believe you use P=I^2R and V/I=R kinds of formulas as well as P=V^2rms/R and P=I^2rmsR to solve bits and pieces but i dont know how to use time and alternating current to deal with this question... in fact i cant even approach this. can someone help me out? The other question is 92. page 616 (one star) A 3.00 mF and a 5.00 mF capacitor are connected in series across a 30.0V battery. A 7.0 mF capacitor is then connected in parallel across the 3.00 mF capacitor. Determine the volatage across the 7.00 mF capacitor. with this question i just generally have no freaking CLUE how to do this other than the capacitors in series and capacitors in paralell equations.... i really dont have any idea... help would be appreciated.