What is the current flow in a circuit with a voltage of 120 volts and resistances of 19, 9, and 12 ohms in series?

To find the current flow in a circuit with a given voltage and resistances in series, you first need to calculate the total resistance. In a series circuit, the total resistance is the sum of all individual resistances.

In this scenario, the resistances are 19 ohms, 9 ohms, and 12 ohms. Adding these together gives:

Total Resistance = 19 ohms + 9 ohms + 12 ohms = 40 ohms.

Next, Ohm's Law can be applied to find the current. Ohm's Law states that current (I) is equal to voltage (V) divided by resistance (R):

I = V / R.

Substituting the known values:

I = 120 volts / 40 ohms = 3 amps.

This indicates that the current flowing through the circuit is indeed 3 amps. Thus, the answer correlates directly with the correct understanding of series circuits and how to apply Ohm's Law to determine the current based on the total voltage and the total resistance in that circuit.