Electrostatics

Which method of charging involves a physical interaction between two objects (mostly by rubbing)? In this case, 1 object obtains electrons and 1 losses electron making them a negatively charged and positively charged object, respectively.

• Charging by conduction

• Charging by Friction

• Charging by induction

This type of charging generally relies on the occurrence of polarization on 2 differently charged objects where the opposite charge attracts, and the likely-charged repels.

• Charging by conduction

• Charging by Friction

• Charging by Induction

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NGSS.MS-PS2-5

__________ hinder the free flow of electrons from one particle of the element to another. If we transfer some amount of charge to an insulator, the charge remains at the initial location and does not distribute across the surface.

In a vacuum, the distance between a 6.25 μC Charge and a -4.00 μC charge is 2 meters How much force exists between the two?

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NGSS.HS-PS2-4

Which of the following law states that "we can never create a net electric charge. Instead, charge can only move from one place to another"?

• Law of Electrostatics

• Law of Conservation of Electric Charge

• Law of Electric Charges

• Law of Static Electricity

_____________ occurs when an electric field distorts the negative cloud of electrons around positive atomic nuclei in a direction opposite the field.

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NGSS.HS-PS3-5

In an atom, the number of electrons and protons are equal. The net electric charge of an atom is, then, 0.

• True

• False

An electrostatic force of magnitude F exists between two metal spheres having identical charge q. The distance between their centers is r. Which combination of changes would produce no change in the electrostatic force between the spheres?

• doubling q on both spheres while halving r

• doubling q on one sphere while halving r

• doubling q on one sphere while doubling r

• doubling q on both spheres while doubling r

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Two similar metal spheres, A and B, have charges of +2.0 x 10^-6 coulomb and +1.0 x 10^-6 coulomb, respectively. The magnitude of the electrostatic force on A due to B is 4.0N newtons. What is the magnitude of the electrostatic force on B due to A?

• 2.0N

• 4.0N

• 8.0N

• 1.0N

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following is a true statement about the electric field between the two plates?

• The field is attractive between the plates and uniform in strength

• The field is repulsive between the plates and uniform in strength

• The field is attractive between the plates and strongest near the positive

• The field is repulsive between the plates and strongest near the positive

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NGSS.MS-PS2-3

NGSS.MS-PS2-5