Problem: A heart pacemaker fires exactly 69 times a minute, each time a 29.0 nF capacitor is charged (by a battery in series with a resistor) to 0.732 of its full voltage. What is the value of the resistance?

FREE Expert Solution

In this problem, we will find the value of resistance from the expression of voltage across a charged capacitor, which is expressed as:

V=V0(1-e-tRC)

The voltage, V  = 0.732V0

We get time taken by the heart pacemaker to fire once as:

t = 1min/69 = 60s/69 = 0.8696 s

99% (242 ratings)
View Complete Written Solution
Problem Details

A heart pacemaker fires exactly 69 times a minute, each time a 29.0 nF capacitor is charged (by a battery in series with a resistor) to 0.732 of its full voltage. What is the value of the resistance?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the !! Resistor-Capacitor Circuits concept. If you need more !! Resistor-Capacitor Circuits practice, you can also practice !! Resistor-Capacitor Circuits practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Shao's class at SJSU.