0
An LDR (light-dependent resitor) is a particular type of semiconductor (A material with a conduction rating in between that of a conductor and an insulator i.e. electricity flows through a semiconductor slower than through a conductor, but quicker than through an insulator).
Consider an atom as made up of just a nucleus with bound electrons. These electrons require varying amounts of energy to 'escape' from the atom. The semiconductor, as all known matter, is made up of atoms.
Light can currently be explained as being made up of packets of waves called photons where the frequency of these waves determines how much energy they are associated with (Energy = h * frequency: where h is a constant).
Therefore, if light associated with enough energy stikes the semiconductor, then the electrons requiring the equivalent energy to break the bonds will escape.
Electricity is concerned with a flow of electrons, therefore electrons escaping means there is an increase in electrical current.
This increased electrical current is equivalent to a drop in resitance and thus fluctuation in particular frequencies of light affects the resistance of the semiconductor.
Read more: How_do_'LDR's_work
What else can I help you with?
What is an LDR symbol?
An LDR is a Light dependent resistor.
What is the meaning of LDR?
LDR refers to Light Dependent Resistor.
What does LDR stand for?
Light Dependent Resistor LDR also means long distance relationship.
What is the symbol for LDR Holding Corporation in NASDAQ?
The symbol for LDR Holding Corporation in NASDAQ is: LDRH.
In what year did LDR Holding Corporation - LDRH - have its IPO?
LDR Holding Corporation (LDRH) had its IPO in 2013.
What does a LDR sense?
light
What does LDR change as the what intensity changes?
As the light intensity increases, the resistance of an LDR (Light Dependent Resistor) decreases. This means that the LDR becomes more conductive and allows more current to flow through it. Conversely, when the light intensity decreases, the resistance of the LDR increases, reducing the current flowing through it.
What will the decrease of the light intensity on an LDR do to the ammeter reading?
The decrease of light intensity on an LDR will cause the resistance of the LDR to increase, which will result in a decrease in current flow through the circuit. As a result, the ammeter reading will decrease.
What is the purpose of LDR on a circuit?
158980
When light falls on ldr resistance is increasing why?
When light falls on an LDR (Light Dependent Resistor), more photons are absorbed by the semiconductor material in the LDR, causing more electron-hole pairs to be generated. This increases the conductivity of the material, resulting in a decrease in resistance. Hence, the resistance of an LDR decreases with an increase in light intensity.
What happens to an LDR when a bright light is shined upon it?
When LDR is exposed to light energy . Due to light energy incident on LDR surface, free electron movement of an atom is increased in LDR. This causes high conduction of curent flowing through LDR. beause of free electron movement in LDR, resitance get decreased.
What is the market cap for LDR Holding Corporation LDRH?
As of July 2014, the market cap for LDR Holding Corporation (LDRH) is $534,318,199.51.
