[填空题]
A bird stands on a dc eqf uu i9z0nh d;u3eg7,lectr ,5rerizr86 . q +yu*-brrzlihic transmission line carrying 2800 A (Fig. 18–34). The line hr6zii,b-5zr8 lyr*u rerq h +.as $2.5\times10^{ -5}\;\Omega$ resistance per meter, and the bird’s feet are 4.0 cm apart. What is the potential difference between the bird’s feet? $ \times10^{-3 }\;V$
