Question

A square of side 20cm made of conductor carrying current 4A. Find the magnetic field at the centre of the square.

Answer 1

Explanation:

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Answer 2

equivalent resistance of first combination is 2 ohm

and, equivalent resistance of second combination is 27 ohm

these two combination are connected in parallel

so, net resistance is 54/29 ohm

so total current = V/R

= 24/(54/29)