A current of 5 A is passing through a non-linear magnesium wire of cross-section 0.04 m2. 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 $\Omega$m)

Question

A current of 5 A is passing through a non-linear magnesium wire of cross-section 0.04 m². 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 $\Omega$m)

11 $\times$ 10^$-$5 V/m

11 $\times$ 10^$-$3 V/m

11 $\times$ 10^$-$7 V/m

11 $\times$ 10^$-$2 V/m

Solution

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