EVERYDAY SCIENCE

Detailed explanation-1: -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 (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.

Detailed explanation-2: -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. This value is usually represented in schematics with the greek letter “", which is called omega, and pronounced “ohm".

Detailed explanation-3: -Answer : Electrical resistance is measured by either of two methods: constant current or constant voltage. The constant current technique sources a known current through an unknown resistance and the resulting voltage is measured. This technique is generally used for resistance values below 200M ohms.

Detailed explanation-4: -One-ohm is equal to 1 volt / 1 ampere. The SI unit of electrical resistance i.e Ohm is named in honour of the 19th-century German physicist Georg Simon Ohm.

Detailed explanation-5: -The SI unit of electric resistance is the ohm (). 1 = 1 V/A.