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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A room AC run for 5 hour at a voltage of 220 V The wiring of the room constant of Cu of 1 mm ratio and a length of 10 m consumption per day is 10 commerclal unit What fraction of it goes in the joule heated in wire? What would happen if the wiring is made of aluminum of the same distances? [ρcu = 1.7 × 10^−8Ω, ρA1 = 2.7 × 10^−8 Ω m]

A room AC run for 5 hour at a voltage of 220 V The wiring of the room constant of Cu of 1 mm ratio and a length of 10 m consumption per day is 10 commerclal unit What fraction of it goes in the joule heated in wire? What would happen if the wiring is made of aluminum of the same distances? [ρcu = 1.7 × 10^−8Ω, ρA1 = 2.7 × 10^−8 Ω m]

respectively . When these bulbs are connected in series across a dc source of 500 V then Two bulbs consume same energy when operated at 200 V and 300 V