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# doubt in maximum power transfer theorem

Discussion in 'General Electronics Chat' started by shiva bharadwaj, Oct 8, 2008.

Sep 29, 2008
19
0
In this theorem load resistance should be equal to the thevenin's equivalent of the network which supplies power.
But when load resistance is more compared to thevenin's equiavlent there will be more voltage drop across the load .Isn't that preferred?
So why should those both resistances be equal?
I know my approach is wrong here,please correct me.

2. ### mik3 Senior Member

Feb 4, 2008
4,846
70
Yes, the voltage drop will be greater but the current will decrease (the voltage source is constant) so the power does not increase but instead it decreases.

3. ### hgmjr Retired Moderator

Jan 28, 2005
9,029
219
Here is a link to the material on maximum power transfer theorem contained in the AAC ebook. Well worth taking a look at to help clarify the topic.

hgmjr