Define potential difference between 2 points in an electric circuit. State its SI unit. Name the device used to measure the potential difference between two points in an electric current.

Question

Define potential difference between 2 points in an
electric circuit State its SI unit Name the device used to measure
the potential difference between two points in an electric
current

Varshith Annavarapu · Accepted Answer

Electric potential of a point in an electric field is defined as
the work to be done to move a unit positive charge from infinity to
that point
Potential difference is the difference in the potential between
the two terminals of the battery or any other current source
connected in the circuit For example if we say that we have a
battery of 3volts then we mean to say that when this battery will
be connect in the circuit then it will maintain
a potential difference of 3volts across its terminals
si unit of potential difference is v
voltmeter is the device by which potential difference is
measured