A current of \( 5 \mathrm{~A} \) is passing through a non-linear magnesium wire of cross-section...
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A current of \( 5 \mathrm{~A} \) is passing through a non-linear magnesium wire of cross-section \( 0.04 \mathrm{~m}^{2} \). At every point the direction of current density is at an angle of \( 60^{\circ} \) with the unit vector of area of cross-section. The magnitude of electric field at every point of the conductor is
(Resistivity of magnesium, \( \rho=44 \times 10^{-8} \Omega \mathrm{m} \) )
(a) \( 11 \times 10^{-2} \mathrm{~V} / \mathrm{m} \)
(b) \( 11 \times 10^{-7} \mathrm{~V} / \mathrm{m} \)
(c) \( 11 \times 10^{-5} \mathrm{~V} / \mathrm{m} \)
(d) \( 11 \times 10^{-3} \mathrm{~V} / \mathrm{m} \)
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