# How many watt-hours are there in 1000 joules? Please explain mathematically.

Mar 1, 2018

0.278 watt-hours

#### Explanation:

Consider the power generated in the above circuit in watts: ${I}^{2} R$ ,
Or $\frac{1}{3600}$ watt-hour
Or $2.78 \cdot {10}^{-} 4$ watt-hour
So 1000 joules will be $2.78 \cdot {10}^{-} 4 \cdot {10}^{3}$ watt-hour