Question

how many joules of energy are consumed by 1000w heater used for 2h??

Answer 1

Answer:

Energy consumed in 2hrs= 1kWh

Energy consumed in 1hr= 0.5kwh

So,

1kWh=3.6×10^6j

0.5kWh=1.8×10^6j

Therefore

Energy consumed in 2hrs = 2×1.8×10^6j =3.6×10^6j

Answer 2

Answer:

3.6 x10^6 j

Explanation:

Energy consumed in 2 hrs= 1 kWh

Energy consumed in 1hr= 0.5kwh

So,

1kWh-3.6x10 6j

0.5kWh=1.8*10^6j

Therefore

Energy consumed in 2hrs 2x1.8x10^6j

3.6x10 6j