7. A wire of length Land area of cross-section A has a resistance 9? What would be the resistence of wire of same material
having length 4/3 and area of cross section 2A? also find the ratio of resistence of two wires?
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The relationship between resistance and the area of the cross section of a wire is inversely proportional . When resistance is increased in a circuit , for example by adding more electrical components , the current decreases as a result.
What will be the resistance of a metal wire of length 2m and area of cross section 1.55×10−6m2 1.55 × 10 − 6 m 2 is the resistivity of the metal be 2.8×10−8Ω⋅m 2.8 × 10 − 8 Ω ⋅ m ?
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