Adding more: It's a distributed R-C circuit, along with discrete R of the bulb. C per unit distance depends on the positioning of the wires. How fast current

Adding more: It's a distributed R-C circuit, along with discrete R of the bulb. C per unit distance depends on the positioning of the wires. How fast current ramps up depends on the distributed C and the bulb's R (as wire's distributed R is ignored in the problem statement).