Question

Design a physics problems (with numbers and can be solved) related to circuits and has real world context (chirstmas light bulbs in series, iron, cost of electric bills....). The problem needs to include a background information. The situation is "rich" enough to need a picture drawn. The physics scenario is more challenging that just plugging numbers into one of the equations. (Use knowledge of resistor, current, Ohm's law, parellel/series circuits, energy, power)

Answer 1

Mr. Smith wants to light up his home and calculate how much he has to play monthly for the lighting. He's using 6 100W bulbs across his home power suply which is 120V. Each bulb draws 0.833Amp across it when they're being connected directly to the source. He fixes a light bulb in his living room, one in the bedroom and one in the bathroom, each gives out energy output of 100W.
For his porch, backyard and closet he decides to fix those other 3 lightbulbs in a way to yeild out 11W of power form each. Draw a circuit diagram to show how he connect those 6 lightbulbs. If 1kWh of electricity costs 12 cents and he lights up those bulbs for 7 hours daily, what's his monthly bill is going to be?