Logout Open In App
Open In App
Warning: foreach() argument must be of type array|object, bool given in /var/www/html/web/app/themes/studypress-core-theme/template-parts/header/mobile-offcanvas.php on line 20

Chapter 4: Q18DQ (page 841)

8 Eight flashlight batteries in series have an emf of about 12 V, similar to that of a car battery. Could they be used to start a car with a dead battery? Why or why not?

Short Answer

Expert verified

No, 8 flashlight batteries in series could not be used to start a car with deadbatteries.

A car battery may have a current up to 250 amps or even larger.

The flashlight battery only provides about 0.30 amps.

Even if 8 batteries are connected in series, they are not enough to start a car dead battery

Step by step solution

01

Definition of battery

An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices.

02

Compare a car battery with a flashlight battery

A car battery may have a current up to 250 amps or even larger.

The flashlight battery only provides about 0.30 amps.

Even if 8 batteries are connected in series, they are not enough to start a car dead battery.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

A cylindrical rod has resistivity ρ. If we triple its length and diameter, what is its resistivity in terms ofrole="math" localid="1655715631515" ρ .

A beam of protons traveling at 1.20 km/s enters a uniform magnetic field, traveling perpendicular to the field. The beam exits the magnetic field, leaving the field in a direction pependicurlar to its original direction (Fig. E27.24). The beam travels a distance of 1.10 cm while in the field. What is the magnitude of the magnetic field?

Electrons in an electric circuit pass through a resistor. The wire on either side of the resistor has the same diameter.(a) How does the drift speed of the electrons before entering the resistor compare to the speed after leaving the resistor? (b) How does the potential energy for an electron before entering the resistor compare to the potential energy after leaving the resistor? Explain your reasoning.

Current passes through a solution of sodium chloride. In

1.00s,2.68×1016Na+ions arrive at the negative electrode and3.92×1016CI-

ions arrive at the positive electrode. (a) What is the current passing between

the electrodes? (b) What is the direction of the current?

In the circuit shown in Fig. E26.47 each capacitor initially has a charge of magnitude 3.50 nC on its plates. After the switch S is closed, what will be the current in the circuit at the instant that the capacitors have lost 80.0% of their initial stored energy?
See all solutions

Recommended explanations on Physics Textbooks

Fields in Physics

Read Explanation

Rotational Dynamics

Read Explanation

Waves Physics

Read Explanation

Electromagnetism

Read Explanation

Solid State Physics

Read Explanation

Physics of Motion

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free