Some light-dimmer switches use a variable resistor as
Chapter 26, Problem 26.82(choose chapter or problem)
Some light-dimmer switches use a variable resistor as shownin Fig. 26-73. The slide moves from position x = 0 tox = 1, and the resistance up to slide position x is proportionalto x (the total resistance is R war = 150 XI at x = 1).What is the power expended in the lightbulb if(d) x = 1.00, (b ) x = 0.65, (c) * = 0.35?FIGURE 26-73
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