question_answer

\[n\]identical bulbs, each designated to draw a power P from a certain voltage supply. The total power which they will draw is:

A)  \[P/n\]               

B) \[P/{{n}^{2}}\]

C) \[np\]                                  

D)  \[P\]

Correct Answer: C

Solution :

No heat will flow through CD if \[\Rightarrow \]               \[P={{P}_{1}}+{{P}_{2}}+...{{P}_{n}}\] \[P'=P+P+...P\] (up to\[n\]) \[P'=n\,P\]