Consider a wire with a circular cross section that is 500m in length and 1mm^(2) in cross sectional
area. The resistivity of the wire is 2 imes 10^(-8)Omega *m. You may assume that Ohm's law applies. Continuing with the wire from the previous problem: if the voltage difference between the ends
of the wire is 100 Volts,
(a) How much current is flowing in the wire?
(b) What is the current density in the wire?
(c) What is the electric field inside the wire?
(d) How many watts per cubic meter are being dissipated as Joule heat in the wire?
(e) How many total watts are being dissipated in the wire?
3. Continuing with the wire from the previous problem: if the voltage difference between the ends
of the wire is 100 Volts,
(a) How much current is flowing in the wire?
(b) What is the current density in the wire?
(c) What is the electric field inside the wire?
(d) How many watts per cubic meter are being dissipated as Joule heat in the wire?
(e) How many total watts are being dissipated in the wire?