When … is electric motor load. Resistance, in electricity, property of an electric circuit or part of a circuit that transforms electric energy into heat energy in opposing electric current. Resistance is a measure of the opposition to current flow in an electrical circuit. Definition of Electrical Resistance Resistance (also known as ohmic resistance or electrical resistance) is a measure of the opposition to current flow in an electrical circuit. Resistance involves collisions of the current-carrying charged particles with fixed particles that make up the structure of the conductors. It can be due to static or dynamic load. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Ohm defines the unit of resistance of "1 Ohm" as the resistance between two points in a conductor where the application of 1 volt will push 1 ampere, or 6.241×10^18 electrons. It is nothing but opposition to the current flow. He is credited for formulating Ohm's Law. Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance. Electrical resistance shares some conceptual parallels with the notion of mechanical friction. More collisions mean more resistance. Answered by: Martin Archer, Physics Student, Imperial College London, UK Impedance is a more general term for resistance that also includes reactance. voltage = current x resistance V = I x R. is an expression of ohm's law. Wider wires have a greater cross-sectional area. The circuit with the higher resistance will allow less charge to flow, meaning the circuit with higher resistance has less current flowing through it. All materials resist current flow to some degree. In electronics and electromagnetism, the electrical resistance of an object is a measure of its opposition to the flow of electric current. The reciprocal quantity is electrical conductance, and is the ease with which an electric current passes. Resistance is measured in ohms, symbolized by the Greek letter omega (Ω). Water will flow through a wider pipe at a higher rate than it will flow through a narrow pipe. This can be attributed to the lower amount of resistance that is present in the wider pipe. Static load can be resistor, heating coil etc. This brings us back to Georg Ohm. Second, the cross-sectional area of the wires will affect the amount of resistance. A test circuit is used to find how the current through a The gradient (slope) of the line shows how big the resistance is. Low resistance allows more current to flow and vice versa. In other words, resistance is the opposition to a steady electric current. If the resistance of a component is constant (constant means it stays the same) then a plot (graph) of current against voltage will be a straight line. Dynamic load, for e.g.