Question

What would happen to the V/I graph of an electric circuit if the resistaneR1 used in the circuit is replaced by another resistane R2 such that 3/2R1=4/3R2?

Answer 1

according to Ohm's law ,
Resistance is the ratio of potential ( V) and current ( I) .

e.g R = V/I
another way we can say that resistance is the slope of V-I graph .

now, given,
(3/2)R1 = (4/3)R2

9R1 = 8R2

R2 = 9/8R1 ------(1)

case 1 :- when resistance R1
then , slope of V- I graph = R1

case 2 :- when , resistance R2
then, slope of V-I graph = R2
e.g slope = 9/8R1

hence, slope of 2nd Case > slope of 1st case .

so, graph of 2nd case ( R2 resistance ) has above the graph of 1st case ( R1 resistance) .