- #1
CAH
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See photo!
Why does the power dissipated increase and then decrease (see graph)? Is it something to do with emf?
Also can internal resistance change as the variable resistor increases/decreases or is it always constant?
- this isn't one of the questions they ask I'm just wondering
Why does the power dissipated increase and then decrease (see graph)? Is it something to do with emf?
Also can internal resistance change as the variable resistor increases/decreases or is it always constant?
- this isn't one of the questions they ask I'm just wondering