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(II) A charge $Q$ is transferred from an initially uncharged plastic ball to an identical ball 12$\mathrm { cm }$ away. The force of attraction is then 17$\mathrm { mN }$ . How many electrons were transferred from one ball to the other?

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$1.0 \times 10^{12}$ electrons

Physics 102 Electricity and Magnetism

Chapter 21

Electric Charge and Electric Field

Gauss's Law

Rutgers, The State University of New Jersey

University of Winnipeg

McMaster University

Lectures

11:53

In physics, a charge is a physical property of matter that causes it to experience a force when placed in an electromagnetic field. Electric charge is a characteristic property of many subatomic particles, which determines their electromagnetic interactions. Electrically charged matter is influenced by, and produces, electromagnetic fields. The interaction between a moving charge and the electromagnetic field is the source of the electromagnetic force, which is one of the four fundamental forces.

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.

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(II) A charge $Q$ is trans…

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(III) A charge $Q$ is tran…

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(II) A charge Q is transfe…

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Two insulating small spher…

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Two identical small metal …

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Two identically charged sp…

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Two small spheres spaced 2…

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18:00

Two small, identical condu…

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You have three identical m…

06:27

Two small plastic spheres …

Okay, so we have to charge this year two balls here. So let's suppose that charge que ese transfer from one point to another says that one will be. Plus, you charged on one bar B minus Q charge. Now the force between them, the distance between them was given. That is I'm West draws him now the force beaten them. F is given. That is 17,000,000 Nugent. So that is your report. General wants seven Newton now this force would be equal to key chance. He risk wired by the distances Quiet. That is our sweat. So from this you can write Curious choir is equal to zero point General 17 into artists Where is your point 12 meters? Right in meters square upon gay is 9 to 10 to the power name. Now if you find this out, distance out to be if you find a cure this turns out to be 1.6 for inter 10 to the power minus seven Now confined The number of electrons we used the from that child is called the currency The stars have finally crossed So an equal to you upon he so if on were easy. Go to 1.6 entered into the far minus 19 full of now, if you plug in the value off you and me here, this turns out to be 11 little three into 10 to the power trail. Cool. Spread across a number of victims. All right, so we are done with the solution to this problem. Thank you for watching.

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