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Unit 8 Overview: Electric Charge and Electric Force

2 min readseptember 9, 2021

Peter Apps

Peter Apps

Peter Apps

Peter Apps

Attend a live cram event

Review all units live with expert teachers & students

Electricity is everywhere, powering our daily lives. While difficult to visualize, the basics of electricity rely on the idea of and the interactions of charged objects.

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2Felectricity.gif?alt=media&token=f1ee38c1-90fe-41d4-a0ce-c075343659b5

Image courtesy of Giphy.

This unit introduces the concepts of and . These concepts serve as the basis for developing in Unit 9 as well as being foundational to the topics in AP Physics 2. These topics will account for ~4-5% of the AP exam questions and will take approximately 3-5 45 minute class periods to cover.

Applicable Big Ideas in Unit 8

  • Big Idea #1: Systems - Objects and systems have properties such as mass and charge. Systems may have an internal structure.

  • Big Idea #3: Force Interactions - The interactions of an object with other objects can be described by forces.

  • Big Idea #5: Conservation - Changes that occur as a result of interactions are constrained by conservation laws.

Key Concepts for Unit 8 🔑

  • Charge (q)

  • (Fe)

  • , ,

Key Equations for & 🗝

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2FScreen%20Shot%202020-04-15%20at%208.56.28%20PM.png?alt=media&token=81a87671-9e4c-4c72-a987-8cd22611a402

🎥Watch: AP Physics 1 - Unit 8 Streams

Key Terms to Review (9)

Conservation of Charge

: The principle that states that the total electric charge in a closed system remains constant over time.

Electric charge

: Electric charge is a fundamental property of matter that determines how it interacts with electric fields. It can be positive or negative.

Electric Circuits

: Electric circuits are pathways through which electricity flows. They consist of components such as wires, resistors, capacitors, and batteries connected in a closed loop.

Electric Force

: Electric force refers to the attractive or repulsive force between two charged objects. Like charges repel each other, while opposite charges attract each other.

Electron

: An electron is a subatomic particle that carries a negative charge and orbits around the nucleus of an atom.

Electrostatic Force

: Electrostatic force refers to the attraction or repulsion between electrically charged objects due to their electric charges.

Magnetism

: Magnetism is a force that attracts or repels certain materials, such as iron or steel. It is caused by the movement of electric charges.

Neutron

: A neutron is a subatomic particle that has no charge and is found in the nucleus of an atom.

Proton

: A proton is a subatomic particle found in the nucleus (center) of an atom. It has a positive electrical charge and contributes to the mass of the atom.

Unit 8 Overview: Electric Charge and Electric Force

2 min readseptember 9, 2021

Peter Apps

Peter Apps

Peter Apps

Peter Apps

Attend a live cram event

Review all units live with expert teachers & students

Electricity is everywhere, powering our daily lives. While difficult to visualize, the basics of electricity rely on the idea of and the interactions of charged objects.

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2Felectricity.gif?alt=media&token=f1ee38c1-90fe-41d4-a0ce-c075343659b5

Image courtesy of Giphy.

This unit introduces the concepts of and . These concepts serve as the basis for developing in Unit 9 as well as being foundational to the topics in AP Physics 2. These topics will account for ~4-5% of the AP exam questions and will take approximately 3-5 45 minute class periods to cover.

Applicable Big Ideas in Unit 8

  • Big Idea #1: Systems - Objects and systems have properties such as mass and charge. Systems may have an internal structure.

  • Big Idea #3: Force Interactions - The interactions of an object with other objects can be described by forces.

  • Big Idea #5: Conservation - Changes that occur as a result of interactions are constrained by conservation laws.

Key Concepts for Unit 8 🔑

  • Charge (q)

  • (Fe)

  • , ,

Key Equations for & 🗝

https://firebasestorage.googleapis.com/v0/b/fiveable-92889.appspot.com/o/images%2FScreen%20Shot%202020-04-15%20at%208.56.28%20PM.png?alt=media&token=81a87671-9e4c-4c72-a987-8cd22611a402

🎥Watch: AP Physics 1 - Unit 8 Streams

Key Terms to Review (9)

Conservation of Charge

: The principle that states that the total electric charge in a closed system remains constant over time.

Electric charge

: Electric charge is a fundamental property of matter that determines how it interacts with electric fields. It can be positive or negative.

Electric Circuits

: Electric circuits are pathways through which electricity flows. They consist of components such as wires, resistors, capacitors, and batteries connected in a closed loop.

Electric Force

: Electric force refers to the attractive or repulsive force between two charged objects. Like charges repel each other, while opposite charges attract each other.

Electron

: An electron is a subatomic particle that carries a negative charge and orbits around the nucleus of an atom.

Electrostatic Force

: Electrostatic force refers to the attraction or repulsion between electrically charged objects due to their electric charges.

Magnetism

: Magnetism is a force that attracts or repels certain materials, such as iron or steel. It is caused by the movement of electric charges.

Neutron

: A neutron is a subatomic particle that has no charge and is found in the nucleus of an atom.

Proton

: A proton is a subatomic particle found in the nucleus (center) of an atom. It has a positive electrical charge and contributes to the mass of the atom.


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© 2024 Fiveable Inc. All rights reserved.

AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.