Question

The figure below represents a section of a circular conductor of nonuniform diameter carrying a current of I = 5.20 A. The radius of cross-section A4 is r1 = 0.580 (a) What is the magnitude of the current density across A1? A/m2 The radius r2 at Az is larger than the radius l'1 at A1. (b) is the current at A2 larger, smaller, or the same? The current is larger. O The current is smaller. The current is the same. (c) Is the current density at A, larger, smaller, or the same? The current density is larger. The current density is smaller. The current density is the same. Assume A2 = 341. (d) Specify the radius at Az. mm (e) Specify the current at A2.

Answer 1

du= as U Hri = cement Densite 82 J= 5.20 (AXY3) = 4.92 Ay 2 5.20 (+)(•580) es is conductor es sarre Hence Cerment - same at Az. y J2 = e as Az es more Hence so current Density at 2 d) AS A=BAI So * 3003 - so re=Jr, = 82=1 m I e) cement at A2 > 5020 Amp & same Ja es less is smaller as A. }