What accessory is used to control and adjust the flicker of a tungsten bulb?

What accessory is used to control and adjust the flicker of a tungsten bulb?

• A. Magic gadget
• B. Dimmer
• C. Relay
• D. Stabilizer

Answer: (A)

Dimmer. Tungsten bulbs are a resistive load, so their brightness follows the voltage they receive. A dimmer changes the effective voltage by trimming parts of each AC cycle (phase-cut dimming), letting you adjust light output and, as a result, influence how noticeable any flicker is. It’s the standard accessory for controlling and smoothing the light from tungsten lamps. The other options aren’t meant for this purpose: a relay is just a switch to turn power on or off; a stabilizer keeps voltage steady but doesn’t provide gradual brightness control; and a “magic gadget” isn’t a real device.

Dimmer. Tungsten bulbs are a resistive load, so their brightness follows the voltage they receive. A dimmer changes the effective voltage by trimming parts of each AC cycle (phase-cut dimming), letting you adjust light output and, as a result, influence how noticeable any flicker is. It’s the standard accessory for controlling and smoothing the light from tungsten lamps.

The other options aren’t meant for this purpose: a relay is just a switch to turn power on or off; a stabilizer keeps voltage steady but doesn’t provide gradual brightness control; and a “magic gadget” isn’t a real device.