If a 12VDC circuit has a resistance of 3 ohms, how many amperes are flowing through it?

To determine the current flowing through a circuit, Ohm's Law can be applied, which states that current (I) is equal to voltage (V) divided by resistance (R). In this scenario, the voltage is 12 volts and the resistance is 3 ohms.

Using the formula:

I = V / R

Substituting the known values:

I = 12V / 3Ω

Calculating this gives:

I = 4 amperes

Therefore, the number of amperes flowing through the circuit is 4, confirming that the answer aligns with the principles of Ohm's Law. This law is fundamental in electronics and electrical engineering, allowing for the calculation of current based on voltage and resistance measurements.