A lamp in a child's Halloween costume flashes based on an RC discharge of a capacitor through its resistance. The effective duration of the flash is 0.290 s, during which it produces an average 0.650 W from an average 3.00 V. (a) What energy does it dissipate? 0.189 (b) How much charge moves through the lamp? x Consider the basic definition of current in terms of charge. C (c) Find the capacitance. x What is the basic definition of capacitance? F (d) What is the resistance of the lamp? x Did you consider using Ohm's law?
A lamp in a child's Halloween costume flashes based on an RC discharge of a capacitor through its resistance. The effective duration of the flash is 0.290 s, during which it produces an average 0.650 W from an average 3.00 V. (a) What energy does it dissipate? 0.189 (b) How much charge moves through the lamp? x Consider the basic definition of current in terms of charge. C (c) Find the capacitance. x What is the basic definition of capacitance? F (d) What is the resistance of the lamp? x Did you consider using Ohm's law?
Chapter10: Direct-current Circuits
Section: Chapter Questions
Problem 86AP: A flashing lamp in a Christmas earring is based on an RC discharge of a capacitor through its...
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