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An electric bulb rated 220 V, 60 W is working at full efficiency. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown in the diagram: The total power of the bulbs is: |
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Answer» An electric bulb rated 220 V, 60 W is working at full efficiency. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown in the diagram:
The total power of the bulbs is: |
|