Question

Convert $28.8kJ$ into kilo watt hour.

• A. $8\times {10}^{-3}kwh$
• B. $8kwh$
• C. $8\times {10}^{3}kwh$
• D. None of these

Answer 1

The correct option is A $8\times {10}^{-3}kwh$

We know that $1kWh=3.6\times {10}^6$ $Joules$

$E=28.8\times {10}^3$ $Joules$

$E=\frac{28.8\times {10}^3}{3.6\times {10}^6}$
$=8\times {10}^{-3}kwh$