A standard flashlight battery can deliver about 2.3 W-h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 9.1 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour? (a) Number Units (b) Number Units
A standard flashlight battery can deliver about 2.3 W-h of energy before it runs down. (a) If a battery costs 80 cents, what is the cost in dollars of operating a 100 W lamp for 9.1 h using batteries? (b) What is the cost in dollars if power is provided at the rate of 6.0 cents per kilowatt-hour? (a) Number Units (b) Number Units
Chapter9: Current And Resistance
Section: Chapter Questions
Problem 62P: A 0.50-W, 220- resistor carries the maximumcurrent possible without damaging the resistor. If the...
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