My calculations dnt seem to follow any of the graphs.. at 0.5 its not zero which crosses C and D

.... THE POWER IS INCREASING ... which aint in any part

Oh dear, you haven't got electrics yet.

You need to practise lots of examples until it clicks in your mind.

 

 

~The Maximumpower theorem states

 

The maximum power is delivered to a load when the load resistance is equal to the internal resistance.

 

So the curve has a maximum at this point.

There is only one graph that fits this description.

I remember my teacher talking something like this.... but I dnt get how this works ... how can the power be max when internal and external resistance are equal? I cam surely learn the above statement for exam purposes but the lines dont make sense to me