SSE JE Electrical Engineering 24 March 2021 Shift 1 Paper

Question : 185 of 200

Marks: +1, -0

A long straight circular conductor placed in air is carrying a current of 250 A. Find the magnetising force at a distance of 5 cm from the conductor.

Solution:

r =5 cm =5 × 10^{-2} m

I =250 A

H ={ I }/{2 \πr }={250}/{2 \π× 5 × 10^{-2}}={2500}/{\π}

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