Select the correct answer.
You have a nightlight plugged into an outlet in the hallway, which uses 3.5 watts when plugged in. If the house circuit provides 120.0 volts, what is the
current through this bulb?
We can use the formula P=IV to calculate the current, where “P” is power (measured in watts), “I” is current (measured in Amps), and “V” is voltage. Simply plug and solve:
P = IV (3.5 Watts) = I(120 volts) I = 0.0292 Amps
The current flowing through the bulb is approximately 0.0292 Amps.
