Resistance is defined as the opposition against current flow. Some materials offer more Resistance as others. An example for is rubber. Rubber has more resistance in Compared to copper because of Difference in their molecular construction. Low resistance materials are known as Ladder because electricity can flow through it easily.

Highly durable materials are considered Isolators because no current can flow through her so easily. Examples of low Resistor materials are copper and Aluminum. A few examples of high Resistance materials are rubber, porcelain, Fiberglass and dry wood.

The unit of measure for the resistance is the ohm and the symbol for resistance “Ω”. When used in formulas to calculate resistance, the symbol “R” is used Resistance. Ohm’s law is also used to calculate the resistance. Resistance calculates after Divide voltage by electricity. As an example, R = E ÷ I.

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