science

posted by samuel

A 40W bulb is switched on. It burns out brighter when it was switched on than a short time later.What account for this change in brightness

  1. Damon

    resistance least when cool, current higher then, Power = i V . That is why those incandescent bulbs often burned out instantly when the switch was turned on.

Respond to this Question

First Name

Your Answer

Similar Questions

  1. SCIENCE

    Car headlight circuit - is this possible or do I need two separate circuit diagrams?
  2. math

    The brightness of a light bulb varies inversely as the square of the distance from the source. If a light bulb has a brightness of 300 lumens at 2 ft, what will its brightness be at 10 ft?
  3. math

    The brightness of a light bulb varies inversely as the square of the distance from the source. If a light bulb has a brightness of 300 lumens at 2 ft, what will its brightness be at 10 ft?
  4. Algebra I

    Pump A, working alone, can fill a tank in 3 hours, and pump B can fill the same tank in 2 hrs. If the tank is empty to start and pump A is switched on for one hour, after which pump B is also switched on and the two work together, …
  5. physics

    Two charged particles in an accelerator are at rest until an electric field causes them to accelerate away from each other when the field switched is turned on, particle a accelerates to the left at 8.97e+07 m/s2 while particle B accelerates …
  6. Language Arts (unfortunately, once again)

    I hate to ask a similar question twice, but I am unable to describe the relationship between slain : snail :: flair : frail. I know the first three of five letters are switched, so would my relationship phrase be "switched" or "is …
  7. science

    the incandescent bulb is hot to touch when it has been switched on for a while .why
  8. Science--Myanswer Plz, plz

    Electric charges that are different attract each other. repel each other. **** exist in pairs. do not interact. Magnetic field lines around a bar magnet are only perpendicular to the magnet. spread out from one pole and curve around …
  9. science

    Why is an incandescent bulb hot to touch when it has been switched on for a while?
  10. probability

    Spaceman Spiff’s spacecraft has a warning light that is supposed to switch on when the freem blasters are overheated. Let W be the event “the warning light is switched on” and F “the freem blasters are overheated”. Suppose …

More Similar Questions