Physics · Current Electricity
A current of 5 A is passing through a magnesium wire of cross-section 0.04 m2. At every point, the direction of current density makes an angle of 60° with the unit vector of the area of cross-section. The magnitude of the electric field at every point of the conductor is: (Resistivity of magnesium ρ = 44 × 10-8 Ωm)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 111 × 10-2 V m-1
- 211 × 10-7 V m-1
- 311 × 10-5 V m-1✓
- 411 × 10-3 V m-1
Correct answer
11 × 10-5 V m-1
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