Fluorescent tubes are fitted with a choke. The choke coil:
✓ Correct answer: c) reduces current in the circuit
ExplanationA fluorescent lamp or fluorescent tube is a gas discharge lamp that uses electricity to excite mercury vapour.The excited mercury atoms produce short-wave ultraviolet light that then causes a phosphor to fluoresce, producing visible light.The choke coil reduces current in the circuit.A choke coil, also known as an inductor, is used in fluorescent tubes to limit the current flowing through the circuit.It provides impedance to the alternating current (AC) which helps in stabilizing the current and preventing it from reaching excessively high levels.The choke coil does not step up or step down the voltage (these functions are typically performed by a transformer).277
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