Q06. A nerve cell fires with a frequency of 50 Hertz (50 firing each s firing, 105 singly-charged potassium ions are ejected through the ce which exists a potential of 90 mV. At what rate must energy be supp per second) to the nerve cell, in order for it to fire?

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Chapter7: Electric Potential
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Q06. A nerve cell fires with a frequency of 50 Hertz (50 firing each second). With each
firing, 105 singly-charged potassium ions are ejected through the cell's membrane, across
which exists a potential of 90 mV. At what rate must energy be supplied (how many Joules
per second) to the nerve cell, in order for it to fire?
a. 8'10-14 J/s
b. 3'10-14 J/s
c. 9ʻ10-13 J/s
d. 7'10-14 J/s
Transcribed Image Text:Q06. A nerve cell fires with a frequency of 50 Hertz (50 firing each second). With each firing, 105 singly-charged potassium ions are ejected through the cell's membrane, across which exists a potential of 90 mV. At what rate must energy be supplied (how many Joules per second) to the nerve cell, in order for it to fire? a. 8'10-14 J/s b. 3'10-14 J/s c. 9ʻ10-13 J/s d. 7'10-14 J/s
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