Homework Statement
Suppose you want to run some apparatus that is 75m from an electric outlet. Each of the wires connecting your apparatus to the 100V source has a resistance per unit length of 0.0055 ohms/m. If your apparatus draws 2.5 Amps, what will be the voltage drop across the connecting...
Homework Statement
A heart pacemaker is designed to operate at 60 beats/min using a 4.0uF capacitor. What value of resistance should be used if the pacemaker is to fire when the voltage reaches 63 percent of maximum?
Homework Equations
The Attempt at a Solution
0.63 x (4/1000) x...
Homework Statement
An axon membrane of a nerve cell is approximately a cylinder of length 12mm and diameter 150micrometres. The membrane has a capacitance of 1.0uFcm^-2. There is a resting potential difference of -90mV between the inside and outside of the cell. How mch electrical potential...