Fluorescent lighting (tube light): What is the primary purpose of the choke (ballast) in a fluorescent lamp circuit? Consider both starting and steady-state operation. Choose the best description.

Q: Fluorescent lighting (tube light): What is the primary purpose of the choke (ballast) in a fluorescent lamp circuit? Consider both starting and steady-state operation. Choose the best description.

Concept The choke/ballast limits current through the discharge tube (negative resistance device) and, with the starter, provides a high-voltage kick to initiate the arc. Final Answer To limit lamp current (ballast) and aid starting

Difficulty: Easy

To limit lamp current (ballast) and aid starting
To increase tube brightness by heating the phosphor
To convert AC to DC for the lamp
To filter radio interference exclusively

Correct Answer: To limit lamp current (ballast) and aid starting

Explanation:

Concept
The choke/ballast limits current through the discharge tube (negative resistance device) and, with the starter, provides a high-voltage kick to initiate the arc.

Final Answer
To limit lamp current (ballast) and aid starting

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