Question

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 ()twice as large ()half as large (Jone quarter as large 1a) 1b) 2) The voage acrossa cirut ofa 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 filamentthin filament ()both the same 4b) 5a) 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)

Answer 1