CrazyEngineers
CrazyEngineers

  • Why does a low wattage bulb glow brighter than a high wattage bulb in series connection?

    ANU SEKAR

    ANU SEKAR

    @anu-sekar-0vMhfV
    Updated: Oct 27, 2024
    Views: 1.6K
    If there are two bulbs connected in series to 230v supply, why low watts bulb glow brighter?
    0
    Replies
Howdy guest!
Dear guest, you must be logged-in to participate on CrazyEngineers. We would love to have you as a member of our community. Consider creating an account or login.
Replies

  • Jeffrey Arulraj

    Member • Jun 12, 2013

    Low watt CFL bulb grows brighter than ordinary filament bulb cos they use different principle than that of filament lamps
    Are you sure? This action cannot be undone.
    Cancel

  • lal

    Member • Jun 12, 2013

    Well, let us consider two bulbs in series. A low wattage bulb has higher resistance than the high wattage bulb.

    When connected in series, the same current will be flowing through both bulbs. Let it be I.

    Power output = I X I X R

    R is higher for low wattage bulb. So It will glow brighter.
    Are you sure? This action cannot be undone.
    Cancel

  • Sindhu Chowdary

    Member • Jun 14, 2013

    The higher-wattage lamp has a lower resistance than the lower-wattage lamp. So, when they are connected in series, the larger voltage drop (IR) will appear across the lower-wattage lamp. As power is proportional to the square of the voltage, it is the lower-wattage lamp that will be the brighter.
    Are you sure? This action cannot be undone.
    Cancel
Home Channels Search Login Register