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Heater A has resistance 690,working voltage 230. Heater B has resistance 460, working voltage 230.Which heater require a fuse of higher anperage |
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Answer» - A HEATER - BWorking voltage : 230 V Working voltage : 230 VResistance : 1150 Ω Resistance : 460 ΩWorking time : 5 MINUTE Working time : 5 minuteH= RV 2 t = 1150230 2 ×300 =13800 J H= RV 2 t = 460230 2 ×300 |
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