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/n2

C)   np

D)  P

Correct Answer: C

Solution :

 Total power in parallel \[\Rightarrow P={{P}_{1}}+{{P}_{2}}+...{{P}_{n}}\] \[P=P+P+...P\] (up to n) \[P=n\,P\]