Calculating Resistance of a Lamp
Understanding Ohm's Law
Ohm's Law: Resistance (R) equals Voltage (V) divided by Current (I).
Given data: Voltage (V) = 115 volts, Current (I) = 0.25 amperes
Using the formula: R = V / I
Substitute the values: R = 115 / 0.25 = 460 ohms
Therefore, the resistance of the lamp is 460 ohms.
When calculating resistance, it is important to remember Ohm's law and how to apply it in different electrical circuits.