Calculate the heat devoloped im 30 min.when 3 ampere current flows through an desinged iron box to work under 230 v
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Answer:
Current drawn by the electric iron box = 3 Amperes
Voltage or the potential difference across the iron box = 230 volts
To find :
Heat developed in 30 min
Heat = v×i×t
Heat = 230×3×30
Heat = 20700 joules
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