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In Physics / High School | 2014-07-08

A lamp rated [tex]100\,W, 220\,V[/tex] is connected to the mains electric supply. What current is drawn from the supply line if the voltage is [tex]220\,V[/tex]?

Asked by Feliu182

Answer (2)

Power = (voltage) x (current)
100w = 220v x current
Current = 100w / 220v = 0.455 Ampere (rounded)

Answered by AL2006 | 2024-06-10

The current drawn from the 220 V supply by a 100 W lamp is approximately 0.455 Amperes. This is calculated using the relation I = V P ​ . By substituting the power and voltage values, we find the current to be 0.455 A.
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Answered by AL2006 | 2024-09-27

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