(a) Define one ampere. (b) The resistance of a wire of 0·01 cm radius is 14 Ω. If the resistivity of the material of the wire is 44 × 10⁻⁸ Ωm, find the length of the wire. (Given π = 22/7)

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CASE_STUDIESElectric Current and Its DirectionResistivity of MaterialsCBSE PYQ2 sub-questions

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