The magnitudes of the current density and the diameters for wires 1 and 2 are gi

Question

The magnitudes of the current density and the diameters for wires 1 and 2 are given in the table The current directions are indicated by the arrows Constants Periodic Table Consider the juncion of three wires as shown in the diagram. (Figure 1) Current density (A/mm2) 3.5 Diameter Wire 2.3 2.4 Part A Find the current 13 in wire 3 Figure Express your answer in amperes to two significant figures. Call current out of the junction positive and current into the junction negative View Available Hint(s) Wire 1 3= -4.9 A Wire 2 ns Correct Should you need the answer obtained in this Part subsequently, use the unrounded answer Wire 3 Part B

Explanation / Answer

I3 = -4.9 A
DIAMETER OF WIRE 3 = 1.5 MM

CURRENT DENSITY J = CURRENT/ CROSS SECTIONAL AREA OF WIRE
       J = 4.9/(pi*1.5/2 )
       J = 2.079 A/mm^2

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.