How does a potential difference produce current in a wire?
Answers
potential difference.
Negatively- charged electrons are removed from atoms, the atoms being left as positive ions. The potential difference between the two causes the electrons to be attracted back, producing a flow of electric charge: current electricity.
The following reasons are for a potential difference produce current in a wire :
Potential Difference or Voltage (V)
This tells you how much energy is available to push electric charges through a circuit. To a physicist, it is a measure of the "Electrical potential energy difference that a charge has at one point compared to another."
A familiar way to understand potential difference is to think of a stone on the top of a hill. The stone has a lot of gravitational potential energy which it can lose if it is allowed to fall to the ground. In a battery, or power supply, the electric charges at one terminal (by convention the positive terminal) have MORE energy (electrical potential energy) than when they get to the other terminal, i.e. they can fall downhill from the positive terminal to the negative terminal. For the charges to lose their energy they require a conductive path to allow them to fall down the electrical hill. This path is an ELECTRIC CIRCUIT that provides a way for the charges to lose their excess energy as they travel around the circuit. This is just like the rock on the hill. If it is allowed to, it can fall to the "ground" and lose the stored energy it had.
The energy the charges have to lose is referred to as the 'potential difference'. The potential difference tells you how much energy per coulomb the charges have to lose. 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. Potential difference is commonly referred to as voltage...