Question

How much heat is produced by 1500 Wheater in 7 min?

• A. 1.5 kcal
• B. 15 kcal
• C. 150 kcal
• D. 1500 kcal

Answer 1

Answer: (C)

150 kcal

Answer 2

Heat produced H=$\frac {V^2t}{R \times J}$cal \hspace50mm $H=\frac {P.t}{J}$ \hspace50mm $=\frac {1500 \times 7 \times 60}{4.2}$ \hspace50mm $=1.5 \times {10}^{5}cal=150 kcal$