Question #9aff0

1 Answer
Eddie
Apr 30, 2017

The bulb has a fixed resistance. Domestic residences have a take nationally set voltage off the grid, usually 230 - 240 V depending where you are. So the current as well as the voltage the bulb is expected to draw is pre-set. And therefore power #P = VI# can be calculated beforehand.

So the bulb will burn 75 J/s when drawing on the anticipated voltage.

That's none of the above.

Related questions
See all questions in Electric Power
Impact of this question
1357 views around the world
You can reuse this answer
Creative Commons License