Ask Question
13 December, 07:12

A nerve signal is transmitted along the long, thin axon of a neuron in a small fish. The transmission occurs as sodium ions (Na+) transfer like tipping dominos across the axon membrane from outside to inside. Each short section of axon gets an excess of about 6.0*108sodiumions/mm.

Determine the E field 4.0 cm from the axon produced by the excess sodium ions on the inside of the axon and an equal number of negative ions on the outside of a 1.0-mm length of axon. The ions are separated by the 8.0*10-9-m-thick axon membrane. Use κ = 81 for the dielectric constant of water.

+2
Answers (1)
  1. 13 December, 10:02
    0
    Electric field is 2.67 x 10⁻⁶ N/C

    Explanation:

    Charge of Sodium ion, q = 6 x 10^8 x 1.6 x 10^-19 = 9.6 x 10^-11 C

    Since;

    Electric field, E = 2 kdq / Kr^3

    Substituting all given parameters

    E = (2 x 9 x 10⁹ x 8 x 10⁻⁹ x 9.6 x 10⁻¹¹) / (81 x 0.04³)

    E = 2.67 x 10⁻⁶ N/C
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “A nerve signal is transmitted along the long, thin axon of a neuron in a small fish. The transmission occurs as sodium ions (Na+) transfer ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers