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What is Resistance?

on August 17, 2021

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Resistance is a measure of the opposition to current flow in an electrical circuit. Resistance is measured in ohms.

Also resistance symbolized as greek letter omega (Ω).

Basics

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What is NO contact ?

Normally open (NO) is a contact that doesn't allow current flow through it on normal state . It only allows current flow when energizing it and switching on will close the contact. Electrical symbol of NO :

OHM'S LAW

Ohm's Law states that the current flowing in a circuit is directly proportional to the applied potential difference and inversely proportional to the resistance in the circuit . Mathematical expressions : ** Voltage (V) = current (I) * Resistance (R) ** Current (I) = voltage (V) / Resistance (R) ** Resistance (R) = Voltage (V) / Current (I)

What is VOLTAGE?

Voltage, also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field. SI unit of voltage : VOLT

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What is Resistance?

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