Download the App!

Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.

The battery for a certain cell phone is rated at 3.70 $\mathrm{V}$ . According to the manufacturer it can produce $3.15 \times 10^{4} \mathrm{J}$ of electrical energy, enough for 5.25 $\mathrm{h}$ of operation, before needing to be recharged. Find the average current that this cell phone draws when turned on.

Get the answer to your homework problem.

Try Numerade free for 7 days

Like

Report

the total time required to fully charge the battery is $[100 \mathrm{min}]$

Physics 102 Electricity and Magnetism

Chapter 19

Current, Resistance, and Direct-Current Circuit

Electric Charge and Electric Field

Gauss's Law

Electric Potential

Capacitance and Dielectrics

Current, Resistance, and Electromotive Force

Direct-Current Circuits

Electromagnetic Induction

Rutgers, The State University of New Jersey

Simon Fraser University

University of Sheffield

University of Winnipeg

Lectures

10:31

A capacitor is a passive two-terminal electrical component that stores electrical energy in an electric field. The effect of a capacitor is known as capacitance. The electrical charge stored in a capacitor is proportional to the potential difference between its terminals. A capacitor is defined as an electrical component that can store an electric charge. The effect of a capacitor is known as capacitance. The charge on a capacitor is directly proportional to the potential difference across its terminals. The unit of capacitance in the International System of Units (SI) is the farad (F), defined as one coulomb per volt. In electrical engineering, a common symbol for capacitance is the lowercase Greek letter "rho" (?). The capacitance of a capacitor is also expressed in farads.

18:38

In physics, electric flux is a measure of the quantity of electric charge passing through a surface. It is used in the study of electromagnetic radiation. The SI unit of electric flux is the weber (symbol: Wb). The electric flux through a surface is calculated by dividing the electric charge passing through the surface by the area of the surface, and multiplying by the permittivity of free space (the permittivity of vacuum is used in the case of a vacuum). The electric flux through a closed surface is zero, by Gauss's law.

04:31

The battery for a certain …

01:23

A typical cell phone consu…

01:25

Find the power output of a…

02:07

Batteries are rated in ter…

04:20

A 1.5 V D-size battery sto…

01:37

02:18

00:53

01:04

Estimate the current provi…

Here we have the tea voltage of batteries, 3.70 volt and the battery is capable of producing energy of 3.15 times 10 to the power 4 joule. So here you have energy equal to 3.15 times 10 to the power 4 joule and operative time of betty before it is needed to be. Rejuced is 5.25, which is equal to 189 double 0 seconds. Now we want to calculate the amount of current drawn by sulphite during this time now, while using the relation energy equal to i into v into t. So we have relation for i and i equal to energy upon v into t now by plugging different values. Here here, energy is 3.15 times 10 to the power 4 joule upon operated, voltage, abatis 3.70 volt into operated time of the t is 181900 seconds so by computing we have i equal to 0.450 ampere. This is the various current used by selfhon.

View More Answers From This Book

Find Another Textbook

02:00

A projectile is fired horizontally off the top of a cliff with an initial ve…

02:39

39The Dominican Republic has 10.7 million people and a national populati…

03:21

A plastic rod is rubbed with a piece of wool, and a glass rod is rubbed with…

01:24

A satellite is a large distance from a planet, and the gravitational force f…

01:34

When ionic bonds form compound structures in a solid state, they arrange in …

01:56

Tyler drives 50km north. Tyler then drives back 30km south. What distance di…

01:39

the sputnik 1 satellite orbited earth (mass=5.98 x 10^24 kg) in a circle of …

01:32

1) Do liquids and gases also exert pressure?

04:50

Calculate how much steam from water boiling at 100 C will just melt 50 gm of…

During exercise, the supply of oxygen and __________ to muscles increases. W…