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- Sep 28, 2016
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So, the question asks which of the following changes to the circuit will decrease the electric field between teh electrodes by the greatest amount?
A. Increasing L by a factor of 2
B. Decreasing L by a factor of 2
C. Increasing R by a factor of 2
D. Decreasing R by a factor of 2.
I got the answer correct but when i read the solution i dont know where does E= (V-IR)/ L comes from. I only know E= V/L or at least i can substitute ohm's law E= IR/L. I dont see that V-IR coming from. lol please help.
A. Increasing L by a factor of 2
B. Decreasing L by a factor of 2
C. Increasing R by a factor of 2
D. Decreasing R by a factor of 2.
I got the answer correct but when i read the solution i dont know where does E= (V-IR)/ L comes from. I only know E= V/L or at least i can substitute ohm's law E= IR/L. I dont see that V-IR coming from. lol please help.