Why does the filament glow more brightly as the electric current in a lightbulb is increased?

The glow is dependent on two things: Spectral output, and intensity.

Current makes the temperature hotter, and so the spectrum is shifted from red to violet, which is more energetic. Also, more current increases the rate of light emission (intensity).

  1. 👍
  2. 👎
  3. 👁

Respond to this Question

First Name

Your Response

Similar Questions

  1. science

    Which circuit will have the greatest electric current? (1 point) circuit 1 circuit 4 circuit 2 circuit 3 Circuit A has a resistance of 7.5 ohms, and circuit B has a resistance of 5 ohms. Which statement about the circuits must be

  2. Science

    Electric bulb is Marked 60 watts 120 volt what is the resistance of filament of bulb

  3. chemistry

    The diameter of the tungsten wire in a light bulb filament is bery small, less than two thousandths of an inch, or about 1/20 mm. THe mass of the filament is so very small - 0.0176 grams - that it would take 1,600 filaments to

  4. English

    Identify the incorrectly punctuated sentence. A: Reaching for the lightbulb. Greg fell off the stepladder. B: Thinking he might be hurt Robert ran in to help.*** C: Changing a lightbulb is not difficult. D: Holding the stepladder,

  1. science

    according to ohms law what is the resistance of a lightbulb if that applied voltage is 21.0 V and the current is 3.0 amps? 24 ohms 7.0 ohms** 18 ohms 3.0 ohms

  2. Science

    Match these with the key terms (1) A form of energy that is always transferred from a warmer substance to a cooler one. (2) device that converts hear to a small amount of electric energy often used in temperature sensors. (3) A

  3. Physics

    Calculate the current in the 240-Ώ filament of a bulb connected to a 120-V line. Power = IV

  4. Physics

    Does more current “flow” out of a battery than into it? Does more current “flow” into a lightbulb than out of it? Explain.

  1. Multiple Choice

    Physics 2. Which of the following is equivalent to one ampere? (Points : 1) 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s Question 3.3. A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to

  2. Electrical Engineering

    Eight holiday lights are connected in parallel as shown in Fig. 3. a. If the set is connected to a 120 V source, what is the current through each bulb if each bulb has an internal resistance of 1.8 k? 4. b. Determine the total

  3. Science

    A generator transforms A. Potential energy into kinetic energy B. mechanical energy into electrical energy***** C. Magnetic energy into electrical energy D. Friction into electrical energy Electrical charges that are different A.

  4. physics

    A student conducted an experiment to determine the resistance of a lightbulb. while performing the experiment the student noticed that the lightbulb began to glow and became brighter as she increased the voltage. of the factors

You can view more similar questions or ask a new question.