(Solved) A current of 5 A is flowing through magnesium wire. The current density is making an angle of 60° with Area vector. Find the electric field. (Given : Area 2 m² , ρ Resistivity of Magnesium 11× 10^-4 SI units)

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 Question: 

A current of 5 A is flowing through magnesium wire. The current density is making an angle of 60° with Area vector. Find the electric field. (Given : Area 2 m² , ρ Resistivity of Magnesium 11× 10^-4 SI units)


Solution : 

E= J ρ 

E =( I ρ) /A cos theta 

E = (5 × 11 × 10^-4 )/ 2 cos 60° 

E = 55 × 10^-4 V/m 

 





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