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Physics
»
F.
Electromagnetism
»
F.1.
Electric Forces and Fields
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Unit Challenge
Introduction to Electric Forces
Overview
Determining whether two charges attract or repel each other using the law of charges
Recognizing that electric charge is conserved
Recognizing that electrons are negatively charged and can move and protons are positively charged and stay in place
Separation and Transfer of Charge
Overview
Recognizing that an electric charge tends to be static on insulators and can move on and in conductors
Identifying examples of induction
Identifying examples of conduction
Predicting the effect of a charged rod on the distribution of charges in a neutral electroscope
Coulomb’s Law
Overview
Determining the effect of changing the distances between two charges or the magnitude of charges on the electrical force using Coulomb’s law, |F
_{E}
| = k (|q
_{1}
q
_{2}
|) /r
^{2}
,
Solving problems involving the electric force between two charges using Coulomb’s law, |F
_{E}
| = k (|q
_{1}
q
_{2}
|) /r
^{2}
Electric Fields
Identifying the correct direction of electric field lines for one or more charges
Identifying the correct charges based on the direction of electric field lines
Solving problems involving the electric field intensity and the electric force using the equation E = F/q
Solving problems involving the electric field of a uniform electric field using the equation E = V/d
Electrical Potential
Overview
Solving problems involving the electric potential (V) using the equation ΔV = ΔU
_{E}
/q
Solving problems involving the electric potential created by a point source charge Q using the equation V = kQ/r
Electric Fields — Identifying the correct charges based on the direction of electric field lines
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