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Consider a junction of five wires, as shown in the figure. The arrows indicate the direction of the current flow. (Figure 1)

The information about the magnitudes of the current density and the diameters for wires 1,2,3, and 4 are given in the table. Some of the values are unknown.

Find the current I5 in wire 5. Express your answer in amperes. Use two significant figures. Assume that the current out of the junction is positive and that the current into the junction is negative.

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Ankit Lal
Ankit LalLv10
16 Oct 2020

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