Four wires of equal length 2 m are arran...

Four wires of equal length 2 m are arranged as shown in the figure. Wires , 2, 3 and 4 are of equal cross-sectional area and wire 1 is of half the cross section of these wires. By how much distance pointer at point 5 must be moved to get null point ?

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Four wires of equal length 2 m are arranged as shown in the figure. Wires , 2, 3 and 4 are of equal cross-sectional area and wire 1 is of half the cross section of these wires. By how much distance pointer at point 5 must be moved to get null point ?

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