GENERAL KNOWLEDGE

Detailed explanation-1: -The purpose of the choke is to provide a very high voltage initially between the filaments . The choke serves the purpose of stabilizing the electric flow of current in the fluorescent tube. Without a choke the current would keep increasing without any limitation until it destroys the fluorescent tube.

Detailed explanation-2: -The starter connects the heatting filaments, so they start to emit electrons and after a short time opens the circuit. The current flowing through the choke continues to flow, because the energy in its iductance has to go somewhere, charging the parasitic capacitances and the voltage increases until the gas ionizes.