Electric Circuits and RC Circuit Applications
Explore electric circuits, voltage and current measurements, capacitors in parallel and series, RC circuits for charging and discharging, and the physics of heart pacemakers. Discover how capacitors control pulse rates in pacemakers through a real-world scenario.
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Presentation Transcript
Electric Circuits Voltage Measurement
RC CIRCUITS: Charging Time constant = = RC
RC Circuits: Discharging Time constant = = RC
The physics of heart pacemakers Heart pacemakers, for instance, incorporate RC circuits to control the timing of voltage pulses that are delivered to a malfunctioning heart to regulate its beating cycle.
P 103 In a heart pacemaker, a pulse is delivered to the heart 81 times per minute. The capacitor that controls this pulsing rate discharges through a resistance of 2.1 M . One pulse is delivered every time the fully charged capacitor loses 68.0% of its original charge. What is the capacitance of the capacitor?
