1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
blsea [12.9K]
4 years ago
13

The heating of the filament is what causes the light production (photon emission), and heating is caused by the current in the l

ight bulb. Why isn’t it a good idea to drive light bulbs using constant current sources rather than constant voltage? (Hint: think about the answer to Question 4).
Physics
1 answer:
alexira [117]4 years ago
8 0

Answer:

explained

Explanation:

Yes, the heating of filament is what causes the light production (photon emission), and this heating is caused because of current in the light bulb

(H= i^2*R*t i=current, H= heat, t= time and R= resistance).But using constant current source is not a good idea because in constant current source resistance is very low that can cause short circuit and ultimately fusing it. Whereas in constant voltage source current adjusts itself and prevents fusing because of high resistance in the circuit.

You might be interested in
A bat can detect small objects, such as an insect, whose size is approximately equal to one wavelength of the sound the bat make
blsea [12.9K]

Answer:

6.136 mm

Explanation:

given,

frequency emitted by the bat = 5.59 x 10⁴ Hz

speed of sound = 343 m/s

smallest insect bat can hear  will be equal to the wavelength  of the sound the bat make.

\lambda = \dfrac{v}{f}

\lambda = \dfrac{343}{5.59\times 10^4}

\lambda = 6.136\times 10^{-3}}

λ = 6.136 mm

so, the smallest size of insect that bat can hear is equal to 6.136 mm

8 0
3 years ago
Read 2 more answers
What leads astronomers to believe that some large moons associated with the giant planets have compositions that are roughly hal
Sonja [21]
<span>Astronomers are able to determine facts about the composition of these moons by examining the nature of light that is reflected from their surfacy using a method called spectroscopy. This process works because different materials tend to reflect light at different wavelengths So, by observing at which wavelengths a planetary body reflects light, astronomers are able to estimate its composition.</span>
8 0
3 years ago
What velocity must a 1240 kg car have in order to have the same
Bond [772]

Answer:

90

Explanation:

cause

6 0
3 years ago
a 2.00 kg object is moving east at 4.00 m/s when it collides with a 6 kg object that is initially at rest. after the collision t
baherus [9]

Answer:

v = 1.00 m/s east

Explanation:

Conservation of momentum

Let east be the positive direction

2.00(4.00) + 6.00(0.00) = 2.00(v) + 6.00(1.00)

v = 1.00 m/s east

The two items have stuck together.

6 0
3 years ago
Plzzzz help it for civics
Viktor [21]

Answer:

A : the colonists dumped tea in Boston Harbor

6 0
3 years ago
Other questions:
  • PLEASE THINK ABOUT THIS AND EXPLAIN FULLY :)
    5·1 answer
  • The parts of the body that are related to the movement of blood
    5·2 answers
  • What is the advantages and disadvantages of 'howe' truss?
    13·1 answer
  • The dimensions of a room are 16.40 m long, 4.5 m wide and 3.26 m high. What is the volume of the room in cubic meters? Express y
    5·1 answer
  • A 61.0-kg person jumps from rest off a 10.0-m-high tower straight down into the water. Neglect air resistance. She comes to rest
    11·1 answer
  • Describe briefly difference between conduction, convection, and radiation.
    15·1 answer
  • A solid disk of radius 5.50 cm and mass 1.25 kg , which is rolling at a speed of 1.50 m/s , begins rolling without slipping up a
    15·1 answer
  • You are assigned to do some calculations for a movie stunt that involves a car on a straight road. The road, pictured above, has
    11·2 answers
  • A grasshopper jumps and accelerates at 4.5 m/s2. If its legs exert a force of 0.062 N during the jump, what is the mass of the g
    15·1 answer
  • A 700-kg car, driving at 29 m/s, hits a brick wall and rebounds with a speed of 4. 5 m/s. What is the car’s change in momentum d
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!