# mast electricity ap 17

## 22 terms

### Electrical potential energy

The potential energy of a charged object due to its position in an electric field.

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

∆v=∆PEelec/q

∆v=-Ed

∆v=kc(q/r)

### Capacitance

the ability of a conductor to store energy in the form of electrically separated charges

C=Q/∆V

C=ε₀(A/d)

### Permittivity of a vacuum (value)

ε₀=8.85×10⁻¹²C²/Nm²

½Q∆V

### Electric Current

the rate at which electric charges pass through a given area

∆Q/∆t

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

∆V/I

Ohm, Ω

### Ohm's Law

the resistance is constant over a wide range of applied potential differences

I∆V

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