Electric Potential: Understanding the Difference

AI Thread Summary
Electric potential and potential energy are distinct concepts in physics. Electric potential (V) refers to the potential energy per unit charge, while potential energy (U) is the energy a charge possesses in an electric field, calculated using the formula U = qV. The potential energy depends on both the electric potential and the magnitude of the charge. In SI units, electric potential is measured in volts (V), and potential energy is measured in joules (J). Understanding this distinction is crucial for grasping concepts in electricity and magnetism.
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Hello I'm very confused on what the difference is between electric potential and Potential Energy. I though they were the same but I realized they're not after I got a 30% on a physics quiz. I tried googling it but it keeps telling me that potential energy is equal to mgh which is from mechanics not electricity and magnetism. Any simple explanations? thanks
 
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Potential: V
Potential Energy: U
Electric Charge: q

The Potential energy U of a charge q placed in a potential V is given by the equation below

U=qV

As you can see, the potential energy depends on the potential but also depends on the charge placed in the potential.
 
The potential is the potential energy per unit positive charge. So if you have a potential of 1000 V and a charge of -0.1 C then the potential energy is -100 J. Note that in the SI system potential is measured in V and potential energy is measured in J. 1 V = 1 J/C.
 
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