Question

When an electric lamp is connected to 220V mains.Ampere current occurs.How much flow will be added to that lamp with 100V mains? ​

Answer 1

Answer:

According to Ohm’s law,

assuming that the resistance of the lamp is the same, so, I=E/R.

so current become 100/220 times than previous value. (almost half )

I'=100xI/220

Explanation:

though,

Direct application of Ohm's law is not applicable in this case.

Some CFL products are designed to drive the lighting element at the same voltage no matter what the input is, so it will draw more current.

In case of LED it might not light up at all, ( may give almost 50% of luminosity)

it depends on the kind of luminous element we are talking about.