The toilet paper roll inductor. You stumble across a spool of AWG 20 copper wire and decide to wrap it tightly around the full length of an empty toilet paper roll (it's for science!). Assuming the magnetic field to be uniform along its length, estimate the inductance of your home-made inductor. If you hook this impressive piece of electronics up in series with a 2.0 resistor and 10.0 V battery, how long will it take the current to get up to 99% of the maximum 5.0 A? It seems like we'll use a lot of copper wire. Is it reasonable that we treat the inductor as contributing negligible resistance compared to the 2.02 resistor? Justify why or why not.

The toilet paper roll inductor. You stumble across a spool of AWG 20 copper wire and decide to wrap it tightly around the full length of an empty toilet paper roll (it's for science!). Assuming the magnetic field to be uniform along its length, estimate the inductance of your home-made inductor. If you hook this impressive piece of electronics up in series with a 2.0 resistor and 10.0 V battery, how long will it take the current to get up to 99% of the maximum 5.0 A? It seems like we'll use a lot of copper wire. Is it reasonable that we treat the inductor as contributing negligible resistance compared to the 2.02 resistor? Justify why or why not.