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23-01-2024
Physics

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Which of the following resistances (R) should be connected in series with the electric bulb, originally designed for a 100 V supply, when connected to a 200 V supply, to ensure that the power delivered by the bulb remains at 500 W?

a) 150 ohms
b) 200 ohms
c) 250 ohms
d) 300 ohms

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