An electric iron a, resistance 20 Ω takes a current of 5 A Calculate the heat developed in 30 s.
Pawan Prajapati , 4 Years ago
Grade 12
10 grade science> An electric iron a, resistance 20 Ω takes...
1 AnswersHarshit Singh
Last Activity: 4 Years ago
Dear Student
Resistance of the iron = 20 ohm
Current = 5 amp
Time = 30 seconds
Heat produced = I^2 RT
= 52 × 20 × 30
= 15000 joules or 15 KJ
Thanks
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