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Electric Potential
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Electrical Potential Energy
Electrical Potential Energy ( ๐ท๐ฌ ๐๐๐๐๐๐๐๐ ): the potential energy associated with a charge due to its position in an electric field. Unit: Joules ๐๐ธ ๐๐๐๐๐ก๐๐๐ is a form of mechanical energy Conserved when there is no friction ๐๐ธ=๐พ๐ธ+ ๐๐ธ ๐ + ๐๐ธ ๐๐๐๐ ๐ก๐๐ + ๐๐ธ ๐๐๐๐๐ก๐๐๐
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Tesla Coil As the charges in the sparks move, the electrical potential energy decreases. Because the electric force causes charge to move, work is done.
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Electric Potential (Voltage)
Electric Potential is the potential energy per unit of charge Potential Difference is the work done to move a charge from one point to another (the difference in electric potentials) Both are measured in Volts (V) which is a J/C
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๐ฝ= ๐๐ ๐ Potential Difference V= Electric Potential [V or ๐ฝ ๐ถ ]
k= Coulombโs Law Constant [ ๐ ๐ 2 ๐ถ 2 ] q= charge [C] r= distance to the charge [m]
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Another equation with potential difference
๐ฌ= ๐ฝ ๐
E= Electric Field Strength [N/C] V= Potential Difference [V] d= distance [m]
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Practice What is the electric potential of a point 0.15 m away from a point charge of -6.3 x 10^-11 C?
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Warm-up What is the electric potential created 0.1 meters away from an electron?
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