The \'breakdown voltage\' (where electrical arcing/sparking occurs) of cellular

Question

The 'breakdown voltage' (where electrical arcing/sparking occurs) of cellular tissue is rather small, approximately 0.2V. How much energy (in kJ/mol/second) must a cell expend to keep the electrical potential at 0.1V for 1 minute (assume the cell is a sphere use a size that is typical for a white blood cell) Defibrilation uses a shock to 'reset' an out-of-rhytfim heartbeat. The voltage is often about 1000V and total energy is 100-200J. How much current is delivered in 5 milliseconds to the heart?

Explanation / Answer

3.

power delivered = P = V * I = 1000 * I

energy delivered = E = P * delta t

E = 1000 * I * 5 * 10^(-3)

for E = 100 J

100 = 1000 * I * 5 * 10^(-3)

I = 20 A

for E = 200 J

I = 40 A

current is from 20 A to 40 A

2. : something is missing in part 2 please update

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