Homework Statement
A dc generator is rated at 10 kW, 208 V, and 50 A when it rotates at 1000 rpm. The resistance of the armature windings is 0.56 . Assume that the magnitude of the magnetic field remains constant.
(a) Calculate the "no-load" voltage at 1000 rpm (when there is no circuit...
Homework Statement
After how many time constants does the current in the figure below ( http://www.webassign.net/gianpse3/30-06.gif ) reach the following values?
(a) within 67 percent of its maximum value
(b) within 6.7 percent of its maximum value
(c) within 0.67 percent of...
"For points far from the ends of the cylinders, determine the electric field at the following radial distances from the central axis."
yes sorry forgot to include that!
Homework Statement
A thin cylindrical shell of radius R1 = 5.0 cm is surrounded by a second cylindrical shell of radius R2 = 9.0 cm, as in the figure. Both cylinders are 5.8 m long and the inner one carries a total charge of Q1 = +4.2 µC and the outer one carries a total charge of Q2 = -2.4...