sir can you explain this question
 

Two identical immersion heaters are to be used to heat water, in a large container. Which one of the following arrangement would heat the water faster :

(i) connecting the heaters in series with the main supply,

(ii) connecting the heaters in parallel with the main supply ? Give reasons for your answer.

Asked by seeni2005 | 5th May, 2016, 01:08: PM

Expert Answer:

Resultant resistance in a series combination is greater than any individual resistance. Whereas the resultant resistance in a parallel combination is smaller than any individual resistance.
 
Since H  R; so more the resistance more will be the heat. Therefore, the resistances must be connected in series to the main supply to obtain more heat per minute.

Answered by Yashvanti Jain | 5th May, 2016, 07:52: PM