light bulbs

[cpfc]

if 2 light bulbs joined 1 circuit so you had 1 after another.
what would happen
please

[Hymie]

Assuming both bulbs have the same voltage and wattage (rating) – then each would have ½ the supply mains across the bulb. With ½ the rated voltage across each bulb – the power to each would be ¼ of full output. e.g. with two 100 Watt bulbs wired in series, the light out put of each bulb would be approximately 25 Watts.

Things get more complicated if the bulbs have differing power and/or voltage ratings.

[wildwood]

But, I think I am correct in saying that if you have, say two 12v bulbs in series on a 24v circuit each would emits it's proper rating.

[cpfc]

Thank you both so much

[Hymie]

Wildwood’s response is correct – but only if both bulbs have the same power rating.

For example, placing a 12V, 5 Watt bulb in series with a 12V, 21 Watt bulb – across a 24V supply will result in the 5 Watt bulb dissipating 13 Watts (for a short time - before it fails) and only 3 Watts dissipated by the 21 Watt bulb.