webassign.net 5. -12 points CJ10 20 P.051 My Notes Ask Your Teacher O For a thre

Question

webassign.net 5. -12 points CJ10 20 P.051 My Notes Ask Your Teacher O For a three-way bulb (40 W, 80 W, 120 W) that is designed to operate at 110 V, find the resistance of each of the two filaments. Assume that the wattage ratings are not limited by significant figures, and ignore any heating effects on the resistances. R40 W filament RB0 W filament Additional Materials Section 20.7 Submit Answer Save Progress 6. -2 points CJ10 20.P062. My Notes Ask Your Teacher 59 resistor i connect d in naralle' with a 12S racictor This

Explanation / Answer

Power, P = V^2 / R  

for P = 40 W,

40 = 110^2 / R

R (for 40 W) = 302.5 ohm .......Ans

For P = 80 W,

80 = 110^2 / R

R (for 80 W) = 151.25 ohm .....Ans

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