How do you calculate the total resistance in a series circuit?

To calculate the total resistance in a series circuit, the correct approach is to sum the individual resistances. This means that the total resistance is the sum of each resistor added together: Total Resistance = R1 + R2 + R3 + ....

In a series circuit, current flows through each resistor one after the other, and the total resistance faced by the current is simply the cumulative resistance of all the resistors in the path. This is because each additional resistor introduces an additional opposition to the flow of current, resulting in an overall increase of resistance.

Using this method allows one to accurately determine how much total resistance will affect the electrical current flowing through the circuit. Each resistor's resistance value adds to the total, which directly impacts the circuit's functionality and efficiency.