1. Define resistance & its unit ?
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Resistance is the hindrance offered by an object to the flow of current through it. Lower is the flow of current, higher is the resistance of a given material. SI unit of resistance is Ohm (Ω).
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Resistance is the property of material to oppose the flow of electric current passing through it. Specific resistance is defined as the resistance offered by a unit length and unit cross-section of the substance to a current when a voltage is applied to it. Its SI unit is Ω−m.
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