What potential difference means?

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SUMMARY

Potential difference, denoted as ΔV, quantifies the difference in electrical potential energy per unit charge between two points, such as point A (100 V) and point B (0 V). The calculation of ΔV is straightforward: ΔV = V_A - V_B, resulting in ΔV = 100 V in this scenario. This value indicates the work required to move a charge from point A to point B, specifically 1 joule of energy per coulomb of charge moved, establishing a voltage difference of 1 V for a 1 coulomb charge.

PREREQUISITES
  • Understanding of electrical potential energy
  • Basic knowledge of voltage and its units (volts)
  • Familiarity with the concept of charge (coulombs)
  • Grasp of work-energy principles in physics
NEXT STEPS
  • Study the relationship between voltage and current in Ohm's Law
  • Explore the concept of electric fields and their relation to potential difference
  • Learn about Kirchhoff's Voltage Law in circuit analysis
  • Investigate the implications of potential difference in capacitors and energy storage
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Students of physics, electrical engineers, and anyone interested in understanding the principles of electricity and circuit design.

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Can someone explain to me what potential difference means?
Lets say point A has a potential of 100 V and point B has a potential of 0 V.
So V_AB would be 100 - 0 = ΔV

But what exactly does that tell us? What does ΔV=100 do ?
 
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Hello,
Potential is the difference between electrical potential energy per unit charge between two points. In other words, it is the work required to move a charge from point A to point B, per unit charge. For example, if 1 joule of energy is used to move a negative charge of 1 coulomb from point A to point B, there exists a voltage difference of 1 V between the points.
 

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