Resistance 80703

An immersion cooker has a resistance of 30 ohms and is connected to a voltage of 120 V. How much heat is generated in 2 hours?

Correct answer:

Q =  960 Wh

Step-by-step explanation:

R=30 Ω U=120 V t=2 h  P=RU2=301202=480 W  Q=P t=480 2=960=960 Wh  Q2=Q 3600=960 3600=3456000 J Q3=Q2/1000=3456000/1000=3456 kJ Q4=Q/1000=960/1000=2524=0.96 kWh



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