Lamp Power Calculation
The power consumed by an electrical device is determined by the voltage across it and the current flowing through it.
The formula relating power (P), voltage (V), and current (I) is:
$ P = V \times I $Given values from the question:
- Voltage ($V$) = 450V
- Current ($I$) = 0.4A
Power Calculation Steps
Substitute the given values into the power formula:
$ P = 450\text{V} \times 0.4\text{A} $Perform the multiplication:
$ P = 180 \text{ Watts} $Therefore, the power of the lamp is 180W.
Similar Questions
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Important Questions from Power in Electric Circuits
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