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wht is current 1 in R3?Potential difference across R1 = 5 - 3 = 2 V
Potential difference across R2 = 3 - 2 = 1 V
Potential difference across R3 = 2 - 0 = 3 V
V = IR
R = V/I
R1 = 2/I
R2 = 1/I
R3 = 2/1
so ratio of R1 : R2 : R3 = 2 : 1 : 2 , same as da ratio of choice C