Question

Treatment of heart failure. A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 $\mathrm{V}$ for a very short time, usually about 3.0 $\mathrm{ms}$ (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred?

Name: Problem 36, Chapter 19: College Physics
Uploaded: 2019-06-01T07:35:41-08:00
Duration: 50 s
Channel: Sri Datta Vikas Buchemmavari
Description: Treatment of heart failure. A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 V for a very short time, usually about 3.0 ms (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred?

   Treatment of heart failure. A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 $\mathrm{V}$ for a very short time, usually about 3.0 $\mathrm{ms}$ (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred?

College Physics

Hugh D. Young 9th Edition

Chapter 19, Problem 36

Instant Answer

Solved by Expert Sri Datta Vikas Buchemmavari

06/01/2019

Step 1

In this case, the voltage is 25 V and the current is 12 A. So, the power is given by: \[ P = IV \] Substituting the given values: \[ P = 12A \times 25V \] Show more…

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Treatment of heart failure. A heart defibrillator is used to enable the heart to start beating if it has stopped. This is done by passing a large current of 12 A through the body at 25 $\mathrm{V}$ for a very short time, usually about 3.0 $\mathrm{ms}$ (a) What power does the defibrillator deliver to the body, and (b) how much energy is transferred?

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Key Concepts

Electrical Power

Electrical power is the rate at which energy is transferred or converted in a system. It is determined by multiplying the voltage by the current (P = V × I), giving a measure of how quickly work is done or energy is delivered. This concept is crucial for understanding how devices work when they need to deliver a high amount of energy in a short period of time.

Electrical Energy Transfer

Electrical energy transfer is the total amount of energy delivered over a period of time, calculated by multiplying power by the time duration (E = P × t). This relationship helps in determining how much energy is imparted to a system during a short burst, which is essential in applications where a rapid delivery of energy is necessary.

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