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2. Homemade resistor in an RC circuit A student makes a homemade resistor from a graphite pencil 5.00 cm long, where the graphite is 0.05 mm in diameter. The resistivity of the graphite is p = 1.38 × 10-5/m. The homemade resistor is placed in series with a switch, a 10.00 mF capacitor and a 0.50 V power source. a. What is the RC time constant of the circuit? b. What is the potential drop across the pencil 1.00 s after the switch is closed?

2. Homemade resistor in an RC circuit A student makes a homemade resistor from a graphite pencil 5.00 cm long, where the graphite is 0.05 mm in diameter. The resistivity of the graphite is p = 1.38 × 10-5/m. The homemade resistor is placed in series with a switch, a 10.00 mF capacitor and a 0.50 V power source. a. What is the RC time constant of the circuit? b. What is the potential drop across the pencil 1.00 s after the switch is closed?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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2. Homemade resistor in an RC circuit A student makes a homemade resistor from a graphite pencil 5.00 cm long, where the graphite is 0.05 mm in diameter. The resistivity of the graphite is p = 1.38 × 10-5/m. The homemade resistor is placed in series with a switch, a 10.00 mF capacitor and a 0.50 V power source. a. What is the RC time constant of the circuit? b. What is the potential drop across the pencil 1.00 s after the switch is closed?
Transcribed Image Text:2. Homemade resistor in an RC circuit A student makes a homemade resistor from a graphite pencil 5.00 cm long, where the graphite is 0.05 mm in diameter. The resistivity of the graphite is p = 1.38 × 10-5/m. The homemade resistor is placed in series with a switch, a 10.00 mF capacitor and a 0.50 V power source. a. What is the RC time constant of the circuit? b. What is the potential drop across the pencil 1.00 s after the switch is closed?
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