Question

The purpose of choke in the tube light is:

• A. To decrease the electricity
• B. To increase the electricity
• C. To increase the voltage momentarily
• D. To decrease the voltage momentarily

Answer 1

Answer:

C. To increase the voltage momentarily

• The choke, or inductor when used in flourescent lamps serves as an impedance, limiting the current through the lamp.
• Often the choke is really a transformer in addition to being a current limiting device, with a low voltage tap used to heat the cathodes in a flourescent lamp.
• An inductor can serve as a current limiting device with very low losses compared to a resistor.
• Without choke maximum current flows in the fluorescent lamp, and with choke (which is a inductor )stored the current in the form of charge and reduces the value of maximum current and helps on starting, without choke , the lamps may get fused or never starts.