Final answer:
To calculate total current in a series circuit using Ohm's Law, the total resistance of the circuit must be known; this allows the use of the formula I = V / Rtot with the given voltage to find the current.
Step-by-step explanation:
In order to solve for total current in a series circuit using Ohm's Law, the total resistance (Rtot) of the circuit must be known. Ohm's Law is stated as V = IR, where V is the applied voltage, I is the current, and R is the resistance. For a series circuit, the total resistance can be found by simply adding up the resistance values of all individual resistors in the series. Once you have the total resistance, you can use the given voltage (V) to calculate the current (I) using the formula I = V / Rtot. This will give you the current that flows through the entire circuit, as in a series circuit, the current is the same through each component.