A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). Such a battery is listed as having a capacity of Q = 8.5E-08 C. Part (a) How many free electrons does the battery contain, N? N = Part (b) If there are 1.0 million electrons moving through the phone every second how long will the battery last in seconds? t = Part (c) Current, I, is given in amps which are coulombs per second. What is the current passing through the phone? I =

A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). Such a battery is listed as having a capacity of Q = 8.5E-08 C. Part (a) How many free electrons does the battery contain, N? N = Part (b) If there are 1.0 million electrons moving through the phone every second how long will the battery last in seconds? t = Part (c) Current, I, is given in amps which are coulombs per second. What is the current passing through the phone? I =

University Physics Volume 2

18th Edition

ISBN:9781938168161

Author:OpenStax

Publisher:OpenStax

Chapter9: Current And Resistance

Section: Chapter Questions

Problem 28P: An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the...

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An aluminum wire 1.628 mm in diameter (14-gauge) carries a current of 3.00 amps, (a) What is the absolute value of the charge density in the wire? (b) What is the drift velocity of the electrons? (c) What would be the drift velocity if the same gauge copper were used instead of aluminum? The density of copper is 8.96 g/cm3 and thedensity of aluminum is 2.70 g/cm3. The molar mass ofaluminum is 26.98 g/mol and the molar mass of copper is 63.5 g/mol. Assume each atom of metal contributes one free electron.
Problem 1: A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). Such a battery is listed as having a capacity of Q = 7.5E-08 C. Part (a) How many free electrons does the battery contain, N? Part (b) If there are 1.0 million electrons moving through the phone every second how long will the battery last in seconds? Part (c) Current, I, is given in amps which are coulombs per second. What is the current passing through the phone?
A cell phone battery uses chemistry to create a charge separation between the terminals (anode and cathode). Such a battery is listed as having a capacity of Q = 5.5E-08 C. Part (a) How many free electrons does the battery contain, N? Part (b) If there are 1.0 million electrons moving through the phone every second how long will the battery last in seconds? Part (c) Current, I, is given in amps which are coulombs per second. What is the current passing through the phone?
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ostro Imssb1.mutah.edu.jo/r A conductor has a cross-sectional area of 2.3x 10-6 m2 and the number of free electrons per unit volume is 8.5x 1028 electron/m. When the current is 9 A, find the drift speed (in mm/s) of the electrons. Use the charge of the electron to be 1.6x 10-19 C