In a series circuit where the total voltage is 12 volts and the total current is 4 amps, what is the total resistance?

To determine the total resistance in a series circuit, Ohm's Law can be applied, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R). The formula can be rearranged to find resistance:

R = V / I.

In this scenario, the total voltage is 12 volts, and the total current is 4 amps. By substituting these values into the formula:

R = 12 volts / 4 amps = 3 ohms.

This calculation demonstrates that the total resistance in the circuit is 3 ohms. This aligns well with the known relationships in a series circuit, where the sum of voltage drops across individual components equals the total voltage supplied. Therefore, understanding and applying Ohm's Law correctly is foundational for solving problems related to electrical circuits.