Question: Some light-dimmer switches use a variable resistor as shown in the figure. The slide moves from position x = 0 to x = 1, and the resistance up to slide position x is proportional to x (the total resistance is Rvar = 1502 at x = 1). 120 V Rvar = 15092 Rbulb = 24092 1) What is the power expended in the lightbulb if x = 1.00. the answer is 60 W 2) What is the power expended in the lightbulb if x = 0.61? What is the power expended in the lightbulb if x = 0.35?