- #1
vucollegeguy
- 28
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A heart pacemaker is designed to operate at 71 beats/min using a 8.5 microF capacitor in a simple RC circuit.
What value of resistance should be used if the pacemaker is to fire (capacitor discharge) when the voltage reaches 69% of maximum?
Here's what I've done (but my answer was wrong):
R= t / (C*ln[v0 / v])
with t = 1.183 beats/sec
C = 8.5 x 10-6F
v0/v = 0.69
R = -3.8 x 108 ohms
Where did I go wrong?
What value of resistance should be used if the pacemaker is to fire (capacitor discharge) when the voltage reaches 69% of maximum?
Here's what I've done (but my answer was wrong):
R= t / (C*ln[v0 / v])
with t = 1.183 beats/sec
C = 8.5 x 10-6F
v0/v = 0.69
R = -3.8 x 108 ohms
Where did I go wrong?
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