Each battery has an emf of 1.5 volts. each wire is 22 cm long, and has a diameter of 0.0007 meters. the wires are made of a metal which has 7e+28 mobile electrons per cubic meter; the electron mobility is 6e-05(m/s)/(v/m). a steady current runs through the circuit. the locations marked by "x" and labeled by a letter are in the interior of the wire.
what is the magnitude of the electric field at location d?
ed = v/m
how many electrons per second enter the positive end of battery #2?
electrons/s
if the cross-sectional area of both wires were increased by a factor of 4, what would the be magnitude of the electric field at location d?
new value of ed = v/m