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---
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tags: [physics, electricity]
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---
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2022-09-07 19:30:05 +01:00
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# Coulombs Laws
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2022-08-21 10:30:04 +01:00
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2024-02-02 15:58:13 +00:00
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Coulomb's Laws express the fundamental relationship between electric charge,
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force and attraction. They are also known as the **Electrostatic Laws** and
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define **the electic force**.
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2022-09-07 19:30:05 +01:00
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## First Law
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> Like charges of electricity repel each other. Unlike charges attract each
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> other.
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Within the atom we see this at work in the way that negatively charged electrons
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are attracted to the positively charged nucleus. This attractive force is
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balanced by the centrifugal force caused by the electron's rotation around the
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nucleus. This keeps the electrons in orbit. Without it, they would spiral into
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the nucleus.
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Within circuits, the first law dictates the movement of charge from negatively
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charged atoms to positively charged atoms through the conductor.
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## Second Law
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The attraction or repulsion between charges acts along the line between the two
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charges.
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## Third Law
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The size of the electric force varies inversely as the square of the distance
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between the two charges. Thus if the distance between the two charges is
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doubled, the attraction or repulsion becomes weaker, decreasing to a quarter of
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the original value.
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## Fourth Law
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The size of the electric force is proportional to the value of each charge
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measured in coulombs.
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