# Capacitor in a Heart Pacemaker#

A heart pacemaker activates $${{ params.rate }}$$ times per minute. Each time, a $${{ params.C }}\rm\ nF$$ capacitor is charged (by a battery in series with a resistor) to $${{ params.charge }}$$ of its full voltage.

## Question Text#

What is the value of the resistance?

$$R=$$ $$\rm\ \Omega$$