What is resistance in a circuit


what is resistance in a circuit

Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms, symbolized by the Greek letter omega (?). Ohms are named after Georg Simon Ohm (), a German physicist who studied the relationship between voltage, current.

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Voltage and current are the first two, and the third is resistance. As electrical resistance is such a basic concept in electrical and electronic circuits it is necessary to answer some questions: what is resistance, what are resistors, and how resistance affects circuits.
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Show less There are two ways to hook together electrical components. Series circuits use components connected one after the other, while parallel circuits connect components along parallel branches. The way resistors are hooked up determines how they contribute to the total resistance of the circuit. To calculate total resistance in series circuits, look for a single loop with no branching paths. Add all of the resistances across the circuit together to calculate the total resistance. Plug in the values for voltage and current and solve for R to get the total resistance in a circuit.

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Resistance is the opposition that a substance offers to the flow of electric current., What drives current?

Voltage, Current, Resistance, and Ohm's Law

An electron traveling through the wires and loads of the external circuit encounters resistance. Resistance is the hindrance to the flow of charge. For an electron, the journey from terminal to terminal is not a direct route. Rather, it is a zigzag path that results from countless collisions with fixed atoms within the conducting material. The electrons encounter resistance - a hindrance to their movement. While the electric potential difference established between the two terminals encourages the movement of charge, it is resistance that discourages it.

This site will look much better in a browser that supports web standards , but it is accessible to any browser or Internet device. If you experience any problems with the site, please contact Pete Hoffman immediately so corrections can be made. Pete can be reached on campus, via email at phoffman swtc. A parallel circuit is one that has two or more paths for the electricity to flow, the loads are parallel to each other. If the loads in this circuit were light bulbs and one blew out, there is still current flowing to the others because they are still in a direct path from the negative to positive terminals of the battery.



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