A 60-w power lightbulb uses 0.5 amps of electricity when connected to a 120-v home line.
Calculation:
Provided that,
Power, P = 60 w
Voltage, V = 120 v
We have to find out the current or electricity consumption, I.
We know that Power (P)is equal to the voltage(V) divided by current(I), or
P = VI
⇒I = P/ V [when power is divided by voltage we get current]
⇒I = 60 / 120
⇒I = 0.5 amp
Therefore from the above calculation, it is concluded that when a 60 w bulb is operating on a 120 v line, it consumes 0.5 amp current.
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