Using Ohm's law, the current through a 20 ohm resistor in a parallel circuit with a voltage of 6V is calculated to be 0.3 amperes.
To calculate the current through a 20 ohm resistor in a parallel circuit with a potential difference of 6V across the battery, we use Ohm's law which states that current (I) is equal to the voltage (V) divided by the resistance (R). Specifically, for the 20 ohm resistor:
I = \(rac{V}{R}\)
In this case:
I = \(rac{6V}{20\Omega}\)
I = 0.3A
Therefore, the current flowing through the 20 ohm resistor is 0.3 amperes.