Electric Potential And Current

Electric potential the amount of work needed to move a unit charge from a reference point to a specific point against an electric field.

Electric potential and current. 614 an electric current is said to exist when there is a net flow of electric charge through a region. Some materials have low resistance and are conductors. An electric current is the rate of flow of electric charge past a point. The electrical potential is defined as the capability of the charged body to do work.

Includes topics such as why the voltage is the same everywhere inside a metal conductor. Electric potential potential difference definition. Potential difference is commonly referred to as voltage. This work is stored in the body in the form of electric potential.

An ammeter measures current and a voltmeter measures a potential difference. Electric current i this is the rate at which the electric charges flow through the circuit. 832 electric charge is carried by charged particles so an electric current is a flow of charged particles the moving particles are called charge carriers which may be one of several types of. Electric circuits can be series or parallel.

When a charged metal dome of a van de graaff generator is discharged through a resistive wire it is found that 2 c of charge passes through it and it dissipates 12 000 j of energy. A classic analogy is to compare electricity to water flowing. Potential difference is measured in volts symbol v where 1 volt is equivalent to an energy difference of 1 joule for each coulomb of charge. Electric potential is measured in joules per coulomb i e volts and differences in potential are measured with a voltmeter.

When the body is charged either electric electrons are supplied to it or they are removed from it. Current is a measure of the flow of charge between two points separated by a potential difference. Some materials have low resistance and are conductors. Relationship between electric current and potential difference problems with solutions.

An ammeter measures current and a voltmeter measures a potential difference. In both the cases the work is done.