A 1500-W heater is connected to a 120-V line for 2.0 hours.How much thermal energy is produced?
A)1.5 kJ
B)3.0 kJ
C)0.18 MJ
D)11 MJ

Question

Quizplus · Accepted Answer

The thermal energy produced can be calculated using the formula: Energy = Power × Time. Here, Power = 1500 W (or 1.5 kW), and Time = 2.0 hours. So, Energy = 1.5 kW × 2.0 hours = 3.0 kWh. Since 1 kWh = 3.6 MJ, the energy produced is 3.0 × 3.6 MJ = 10.8 MJ, which is approximately 11 MJ.

A 1500-W Heater Is Connected to a 120-V Line for 2.0