A trio of 4Ω resistors are all connected in series to a 24 V battery, what is the total resistance of the circuit?

Answer 1

The total resistance of resistors connected in series is the sum of the individual resistors connected in series. In this case there are three 4 ohm resistors connected in series, so the total resistance is 3 x4 = 12 ohms.

The battery voltage is not needed to solve the problem.