M/J 2008 PAPER2 quick problem

[1992]

Its question 6.b) how do we add up the total power?? i thouhgt that in series it should be adding up like P+P
and when its in pareller should be 1/P +1/P. or am i wrong?? need help pleasee

 

[beacon_of_light]

I've answered the same question in another topic. C that...

 

[beacon_of_light]

viewtopic.php?f=26&t=1767

 

[1992]

thanks . and good explanation