Keeping the potential difference constant, the resistance of a circuit is halved. by how much does the current change?
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the amount of current becomes twice of before..
CASE 1
I=V/R................. (i)
CASE 2
I'=V'/R/2=2V/R................. (ii)
from (i) and (ii) we get that I' = 2I
CASE 1
I=V/R................. (i)
CASE 2
I'=V'/R/2=2V/R................. (ii)
from (i) and (ii) we get that I' = 2I
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