Calculate the electrical energy in units consumed by a 1000 W lamp for 10 hours.

Correct option is D

​$$\textbf{Given:} \\\bullet \text{Power, } P = 1000\, \text{W} = 1\, \text{kW} \\\bullet \text{Time, } t = 10\, \text{hours}\\[10pt]\text{Electrical Energy (in kWh)} = \text{Power (in kW)} \times \text{Time (in hours)}\\[10pt]\text{Energy} = 1 \times 10 = 10\, \text{kWh}\\[10pt]\textbf{Final Answer:} \\\boxed{10\, \text{units}}\\[10pt]\textit{(1 kWh = 1 unit of electricity)}$$​​