Voltage / work done by the field

U=\dfrac{W}{q}

Result unit: V (volt)

What it describes

Voltage is the work done in moving a unit charge between two points of the field.

U

voltage

[V]

W

work

[J]

q

charge

[C]

The voltage between two points is the work the field does in moving a unit charge. It is a measure of the potential difference.

Circuits, capacitors, accelerating charges in a field.

The field does 6 J of work moving a charge of 2 C. Calculate the voltage.

Substitution

W=6

q=2

Result

U=\dfrac{6}{2}=3

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