A Five Wire Junction Learning Goal: To learn to apply the concept of current density and Kirchhoff's junction rule.
Consider a junction of five wires, as shown in the figure. The arrows indicate the direction of current flow. (Figure 1)
The information about the magnitudes of the current density and the diameters for wires 1,2,3, and 4 is given in the table. Some of the values are unknown.
Part A. 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.
Frequently Asked Questions
What scientific concept do you need to know in order to solve this problem?
Our tutors have indicated that to solve this problem you will need to apply the Kirchhoff's Junction Rule concept. You can view video lessons to learn Kirchhoff's Junction Rule. Or if you need more Kirchhoff's Junction Rule practice, you can also practice Kirchhoff's Junction Rule practice problems.
What professor is this problem relevant for?
Based on our data, we think this problem is relevant for Professor Mesa's class at LSU.