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Find the conduction current density when conductivity of a material is 500 units and corresponding electric field is 2 units.

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Find the conduction current density when conductivity of a material is 500 units and corresponding electric field is 2 units.

(a) 500

(b) 250

(c) 1000

(d) 2000

This question was posed to me in an interview.

Question is from Conductors topic in portion Electric Fields in Material Space of Electromagnetic Theory

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The correct answer is (c) 1000

Explanation: The conduction current density is given by, J = σE

J = 500 X 2 = 1000 units.

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