If the potential difference across a 12 -ohm resistor is 4 volts,what is the current through it? 0.3 A 0.5 A 3A 4A

## Step 1<br />The problem involves the application of Ohm's law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points and inversely proportional to the resistance of the conductor. The formula for Ohm's law is:<br />### \(I = \frac{V}{R}\)<br />where \(I\) is the current, \(V\) is the voltage, and \(R\) is the resistance.<br /><br />## Step 2<br />In this problem, the voltage \(V\) is given as 4 volts and the resistance \(R\) is given as 12 ohms.<br /><br />## Step 3<br />Substitute the given values into the formula:<br />### \(I = \frac{4}{12}\)<br /><br />## Step 4<br />Calculate the current \(I\).