Now let’s consider the resistance of speaker wire. suppose you’re hooking up a pair of stereo speakers. (a) you happen to have on hand some 20-m-long pieces of 16 gauge copper wire (diameter 1.3 mm); you use them to connect the speakers to the amplifier. these wires are longer than needed, but you just coil up the excess length instead of cutting them. what is the resistance of one of these wires? (b) to improve the performance of the system, you purchase 3.0-m-long speaker cables that are made with 8 gauge copper wire (diameter 3.3 mm). what is the resistance of one of these cables?