Note: I do not need help in solving the question. I only need to understand the concept behind it.
In the thumbnail image below, a potentiometer is shown. My lecturer gave this as an example question. Subsequently, the resistance of Rth and R across load were evaluated in terms of x.
The lecturer subsequently used differentation to find the maximum power across the load.
Here is my question:
Why can't Rth = R across load be used to deduce maximum power across R load?
Why must differentation be used?
In the thumbnail image below, a potentiometer is shown. My lecturer gave this as an example question. Subsequently, the resistance of Rth and R across load were evaluated in terms of x.
The lecturer subsequently used differentation to find the maximum power across the load.
Here is my question:
Why can't Rth = R across load be used to deduce maximum power across R load?
Why must differentation be used?
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