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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > Two bulbs are marked 220 V – 100 W and 220 V – 50 W . a) which bulb will produce more illumination if they are connected in parallel to a 220 V supply? b) which bulb will produce more illumination if they are connected in series to a 220 V supply? c) Also find the total power consumed by both the bulb in each of the two parts above.

Two bulbs are marked 220 V – 100 W and 220 V – 50 W . a) which bulb will produce more illumination if they are connected in parallel to a 220 V supply? b) which bulb will produce more illumination if they are connected in series to a 220 V supply? c) Also find the total power consumed by both the bulb in each of the two parts above.

A 500W heating unit is designed to operate from a 200V line . By what percentage will its heat output drop if the line voltage drops to 160V? Find the heat produced by it in 10 min.