Suppose that the resistance between the walls of a biological cell is 5.1 × 109 Ω. (a) What is the current when the potential difference between the walls is 76 mV? (b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.66 s? (a) (b)
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
Suppose that the resistance between the walls of a biological cell is 5.1 × 109 Ω. (a) What is the current when the potential difference between the walls is 76 mV? (b) If the current is composed of Na+ ions (q = +e), how many such ions flow in 0.66 s?
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