Question

the filament of an iron is of 50 ohm resistance how much heat in calories will be produced by it in 1 minute if electricity supply at 200 volt.??​

Answer 1

ᾰṧ-ṧᾰℓᾰՊ ᾰℓ!кṳՊ!

here, R = 50 ohm

t = 1min = 60s

v= 200 volt

now,

H = V^2 / R t× 1/ 4.2 cal

H = 200× 200 × 60/ 50× 4.2

= 11.43 × 10^3 cal

= 11.43 kcal

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