Question

One watt-hour is equal to:

• A. $36J$
• B. $360J$
• C. $3600J$
• D. $36,000J$

Answer 1

The correct option is C

$3600J$

1. The watt-hour is a unit of energy equivalent to one watt $1W$ of power expended for one hour $1h$ of time.
2. Energy expenditure of $1Wh$ represents$3600joules$($3.600\times {10}^{3}J$).

Hence, option C is correct. i.e $3600J$