Register to reply 
Cells in series and parallel... 
Share this thread: 
#1
Apr1305, 04:53 PM

P: 236

How is emf effected by having cells in series and parallel? I would have thought that for both you would just add the emfs of each cell up, since in both ways you arrange them you are just increasing the attraction/ repulsion experianced by the elctrons in wire.
Thanks in advance. 


#2
Apr1305, 06:42 PM

Emeritus
Sci Advisor
PF Gold
P: 11,155

[tex]E_{series} = \sum_i E_i [/tex]
[tex]E_{parallel} = max(E_i, ~i=1..n) [/tex] 


#3
Apr1705, 02:35 PM

P: 236

But is there a proof for this, either mathematically or in terms of visualised physics?
Surely, each of the cells is going to "push/ pull" the elctrons round ciruit with certain force  why will there arrangement make any difference? 


#4
Apr1805, 03:03 AM

P: 11

Cells in series and parallel...
My understanding of it, although probably very flawed , is that if they are in series, think of the batteries working together, once some electrons are pushed along by one, the other pushes even more, and in parallel, there is an equal path for the electrons to go, so they seperate and act as a cell with the same volage, but the 2 will have a higher capacity now, because each is drawing half the current, unless the voltages for the cells are different, then it will short. I still need to get a better idea of what voltage physically is myself My EE instructor doesn't care for the science behind the engineering, so I can blame him for my lack of understanding



Register to reply 
Related Discussions  
Resistances in Series, Parallel, and SeriesParallel Combinations  Advanced Physics Homework  1  
Need L and C to be in series in order to have a RLC series circuit?  Electrical Engineering  4  
Cells in parallel  Introductory Physics Homework  7  
Cells in parallel?  General Physics  4  
Finding total resistance of circuits with cells in parallel  Introductory Physics Homework  4 