What Is Voltage And Current

This op amp is designed to hold the precise amount of current by applying the voltage which is essential to sustain that current through out the circuit.

What is voltage and current. They are of two types that are explained in detail below. Just like voltage resistance is a quantity relative between two points. In this analogy charge is represented by the water amount voltage is represented by the water pressure and current is represented by the water flow. Historically voltage has been referred to using terms like tension and.

For this reason the quantities of voltage and resistance are often stated as being between or across two points in a circuit. Voltage also called electromotive force is the potential difference in charge between two points in an electrical field. When describing voltage current and resistance a common analogy is a water tank. Voltage is defined so that negatively charged objects are pulled towards higher voltages while positively charged objects are pulled towards lower voltages.

It is the push that causes charges to move in a wire or other electrical conductor it can be thought of as the force that pushes the charges but it is not a force voltage can cause charges to move and since moving charges is a current voltage can cause a current. The op amp used for this purpose is ic lm741. In other words current is the rate of flow of electric charge. When a voltage source is connected to a circuit the voltage will cause a uniform flow of charge carriers through that circuit called a current.

An op amp is implemented to simply convert the voltage signal to corresponding current signal. In a single one loop circuit the amount of current at any point is the same as the amount of current at any other point. So for this analogy remember. Using the tank of water relationship current is the equivalent of the flow of water through the pipe with the flow being the same throughout the pipe.

The basic difference between voltage and current is that voltage is the amount of energy per charge which is required to move electrons from one point to another while current is the rate of flow of charges. Current sources are the opposite to voltage sources in that they like short or closed circuit conditions but hate open circuit conditions as no current will flow. Voltage is what makes electric charges move. Therefore the conventional current in a wire or resistor always flows from higher voltage to lower voltage.

Current is the rate at which electric charge flows past a point in a circuit. A current voltage characteristic or i v curve current voltage curve is a relationship typically represented as a chart or graph between the electric current through a circuit device or material and the corresponding voltage or potential difference across it.