mast electricity ap 17
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Created by:
mastapphysics on November 21, 2011
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22 terms
English | Math / Symbols |
|---|---|
 Electrical potential energy | The potential energy of a charged object due to its position in an electric field. |
| electrical potential energy in a uniform electric field (eq) | PEelectric=-qEd |
| electric potential | the work that must be performed against electric forces to move a charge from a reference point to the point in question, divided by the charge |
| potential difference | the work that must be performed against electric forces to move a charge between the two points in question, divided by the charge |
| Potential Defference (eq) | ∆v=∆PEelec/q |
| Potential Difference in a uniform electric field (eq) | ∆v=-Ed |
| Potential Difference Between a Point at Infinity and a Point Near a Point Charge (eq) | ∆v=kc(q/r) |
| Capacitance | the ability of a conductor to store energy in the form of electrically separated charges |
| Capacitance (eq) | C=Q/∆V |
| Capacitance (unit) | F, farad |
| Capacitance for a parallel-plate capacitor in a vacuum (eq) | C=ε₀(A/d) |
| Permittivity of a vacuum (value) | ε₀=8.85×10⁻¹²C²/Nm² |
| Electrical Potential Energy Stored in a Charged Capacitor (eq) | ½Q∆V |
| Electric Current | the rate at which electric charges pass through a given area |
| Electric Current (eq) | ∆Q/∆t |
| Current (unit) | Ampre, A |
| drift velocity | the net velocity of a charge moving in an electric field |
| Resistance | the opposition presented to electric current by a material or device |
| Resistance/Ohm's Law (eq) | ∆V/I |
| Resistance (symbol) | Ohm, Ω |
| Ohm's Law | the resistance is constant over a wide range of applied potential differences |
| Electric Power (eq) | I∆V |
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