The three resistors in the figure below all have the sameresistance.

(a) When the switch is closed, by what factor does the current inresistor 1 change?
I1,after
I1,before
= 1

(b) By what factor does the potential difference across resistor 2change?
V2,after
V2,before
= 2

(c) By what factor does the current in resistor 2 change?
I2,after
I2,before
= 3

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