Resistance is a measure of a material’s opposition to #neetmcq #neetquestions #physicsmcq - Study24x7
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Resistance is a measure of a material’s opposition to

#neetmcq #neetquestions #physicsmcq

A

voltage

B

current

C

electric force

D

movement of protons

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  • Edubabble LLP

    • 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 (Ω).
    Ohms are named after Georg Simon Ohm (1784-1854), a German physicist who studied the relationship between voltage, current and resistance.
    He is credited for formulating Ohm's Law.
    Resistance cannot be measured in an operating circuit.
    Accordingly, troubleshooting technicians often determine resistance by taking voltage and current measurements and applying Ohm's Law:

    E = I x R That is, volts = amps x ohms. R stands for resistance in this formula. If resistance is unknown, the formula can be converted to R = E/I (ohms = volts divided by amps).

    Examples: In an electric heater circuit, as portrayed in the two illustrations below, resistance is determined by measuring circuit voltage and current, then applying Ohm's Law.

    See more

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