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How does the resistance of a wire depend on its radius? Explain your answer.
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Resistance of a wire is inversely proportional to the area of cross-section of the wire.
`R ∝ 1/"r"^2 or R prop 1/"a" or R ∝ 1/"ЁЭЬЛЁЭСЯ"^2`
where 'a' is the area of cross-section and r is the radius of wire and R is the resistance. In other words thick wire offers less resistance and thin wire offers more resistance. In thick conductor electrons suffer less collisions.
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Draw a I–V graph for a linear resistor. What does its slope represent?
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Reason (R): Copper has very low electrical resistance.
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The ______ is the measure of opposition offered by the component to the flow of electric current through it.
The process of conduction of electric current through the solution is called ______.
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- Resistance
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