2nd Edition

ISBN: 9781323390719

Author: Knight

Publisher: PEARSON C

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In physics, the term current is expressed as the rate of flow of electric charges across the area per unit time (I=q/t). It propagates along in the direction of the motion of positive charges. When the current is caused by the motion of electrons, the di…

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Textbook Question

Chapter 22, Problem 50GP

When an ion channel opens in a cell wall (see Problem 48), monovalent (charge e) ions flow through the channel at a rate of 1.0 × 10⁷ ions/s.

a. What is the current through the channel?

b. The potential difference across the ion channel is 70 mV. What is the power dissipation in the channel?

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Chapter 22, Problem 49GP

Chapter 22, Problem 51GP

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Chapter 22 Solutions

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When an ion channel opens in a cell wall (see Problem 48), monovalent (charge e ) ions flow through the channel at a rate of 1.0 × 10 7 ions/s. a. What is the current through the channel? b. The potential difference across the ion channel is 70 mV. What is the power dissipation in the channel?

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