Final answer:
Ohm's Law is used to calculate the current through the electric heater by dividing the voltage (230 V) by the resistance (115Ω), resulting in a current of 2 A.
Step-by-step explanation:
The student's question about an electric heater operating at a 230 V supply and its resistance being 115Ω pertains to the calculation of the current through the heater.
To find the current (I), we can use Ohm's Law, which states that I = V / R, where V is the voltage and R is the resistance. Plugging the given values into the formula, we get I = 230 V / 115Ω, which calculates to a current of 2 A (amperes).