The total resistance of two 10 ohm resistors connected in series is what?

When resistors are connected in series, their total resistance is simply the sum of their individual resistances. In this case, you have two resistors that each have a resistance of 10 ohms. To calculate the total resistance, you add the resistance values together:

Total Resistance = Resistance of first resistor + Resistance of second resistor

Total Resistance = 10 ohms + 10 ohms

Total Resistance = 20 ohms

Thus, the correct total resistance of the two 10 ohm resistors connected in series is 20 ohms. This principle is fundamental in circuit theory, where series connections result in a straightforward arithmetic combination of resistances.