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A 12 v battery causes a current of 0.5 A through a resistor. a) what is the resistance of the resistor? b) What is the power output of the battery? c) How many joules of energy does the battery lose in a minute?
Answer each multiple choice question (part a) and then (part b) explain in words why your answer is correct The length of a wire is doubled and the radius is doubled. By what factor does the resistance change? ) four times as large 1a) )twice as large )half as large )one quarter as large 1b) 2a) The voage acrossa cirutofa constant resistance is doubled. The power dissiated y that circuit will )quadruple)double )decrease by half ()decrease by one-fourth 2b) a) During a power demand, the voltage output is reduced by 5%. By what percentage is the power on a resistor affected? ( )2.5% less ( )5% less ( )10% less ( )90% less 3b) 4a) Two lamps, one with a thick filament and one with a thin filament of the same material are connected in parall battery. The current is larger in the lamp with the () thick filament thin filament )both the same 4b) Sa) A 60W bulb and a 100W bulb are each connected to a 120V outlet. Which light bulb has more current in it? )60W bulb 100W bulb ()both have the same current 5b)
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Answer #1

@ Resistem@ R二 hone t= 1 min = 60s

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