What is the power consumption of two 10-ohm resistors connected in series with a 10-volt battery?

First, determine the total resistance of the circuit. When two 10-ohm resistors are connected in series, you simply add their values together, resulting in a total resistance of 20 ohms. Next, use the power formula that relates voltage and resistance: P = E^2 / R (Power equals Voltage squared divided by Resistance). Squaring the 10-volt battery voltage gives you 100. Finally, divide 100 by the total resistance of 20 ohms to find the total power consumption, which equals 5 watts. Distractors like 0.5 appear if you calculate current (10 / 20) and mistakenly assume that value is the power.