Calculating Resistance of a Lamp Filament Connected to a 230V Supply

Question:

What is the resistance of the filament of a lamp that draws a current of 0.5A when connected to a 230V supply?

Answer:

The resistance of the filament of the lamp drawing a current of 0.5A and connected to a 230V supply can be calculated using Ohm's Law. The resistance (R) is equal to Voltage (V) divided by Current (I), in this case, R = 230V / 0.5A, which is 460 Ohms.

Understanding Ohm's Law:

Ohm's Law is a fundamental principle in physics that relates the current, voltage, and resistance in an electric circuit. It states that the current passing through a conductor is directly proportional to the voltage applied across it.

Calculation of Resistance:

In the scenario given where a lamp draws a current of 0.5A and is connected to a 230V supply, we can apply Ohm's Law to calculate the resistance. By rearranging the formula R = V / I, we get R = 230V / 0.5A, resulting in a resistance of 460 Ohms for the filament of the lamp.

Therefore, the resistance of the filament of the lamp connected to a 230V supply and drawing a current of 0.5A is 460 Ohms.

For further insights into Ohm's Law and its applications, you can explore more resources and examples here.