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A grid in a high vacuum diode is usually kept negatively charged with respect to the cathode so that the electrons may be?
Wiki User
∙ 9y ago
the grid is negative so it can control the amount of electrons coming off the cathode. To stop or decrease intensity of cathode ray/electron beam, it is made more negative (to repel electrons as negative charge and negative charge repel) and to increase intensity, the grid is made less negative.
Wiki User
∙ 13y ago
Wiki User
∙ 11y agoSo that the electrons may be controlled. The idea is to let only a fraction of them through to the anode, and the amount is controlled by the grid voltage. If all the electrons that came from the cathode got through, the grid would have no effect and the triode would be useless.
Wiki User
∙ 9y agoA grid in a high vacuum triode is usually kept negatively charged with respect to the cathode so that the electrons may be attracted to the anode instead of the grid. The triode was invented by Lee De Forest in 1906 and is considered as the first electronic amplification device.
Wiki User
∙ 15y agoattracted to the anode instead of the grid
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How do you determine the voltage and current for circuit?
Voltage is "Unit of Measure"that how much of Electromotive force needed to move how many numbers of electrons in certain orbit with respect to the time is Volt. The tendency of electrons are being forced from their orbits around the nucleus in an atom by electromotive force is the Current flow
What is a stationary charged particle?
Static electricity
What is Earth in an open system with respect to?
Mainly with respect to energy.
Why is corrosion considered oxidation?
because when corrosion occours on a metal the chemical reaction is an oxidation. This means that the metal will loose electrons and became a positive ion. Fe ------> Fe 2+ + 2 e- The iron is oxydised from metal to metal ion.
What is connecting a circuit for safety precaution to earth?
For various reason some charges may accumulated on an electric equipment. If any personal touch it he/she may get shock. That is why an extra path is provided as ground connection to remove these charges from electric body to the Earth. ========================================================== I was answering contemporaneously, the above answer is correct :-) If two points are charged and they are connected by a perfect conductor, the current flowing between the two points depends on the potential due to the charge difference. The current flows moving electrons from the negative to the positive element up to the moment in which the charge difference is nullified and no current flows due to the presence of no potential difference. If I connect a charged element to a very large, uncharged body, almost all the charge of the charged element is discharged towards the large body, creating a current burst. This happens when I touch with my body a charged element in a circuit: my body is big and neutral and it works as a sort of zero potential element, so that all the charges are discharged towards my body in a current burst that can be quite dangerous. Earth is much bigger with respect to my body, if I create a connection between the circuit and the earth that acts as a potential reference, if I touch the circuit I am at the same potential of earth, at zero potential, but no discharge happens since all possible charges have been already discharged towards Earth.
The grid in high-vacuum triode is usally kept negatively charged with respect to the cathode so that the electrons may be?
If this is for your Penn-foster test i can tell you one thing is that the the answer isn't "accelerated toward the anode".
The grid in a high-vacuum triode is usually kept negatively charged with respect to the cathode so that the electrons may be?
A grid in a high-vacuum triode is usually kept negatively charged with respect to the cathode so that the electrons may be passed through to the anode, but controlled by changes in grid voltage. The triode accomplishes this by amplifying signals applied.
What is reversed conditioning?
The cathode must be made more positive with respect to the anode.
What is reverse bias condition?
The cathode must be made more positive with respect to the anode.
Can you call forward bias voltage as positive voltage?
it is not necessary that always positive voltage should act as a forward bias voltage , it is the potential difference between cathode and anode that makes it forward or reverse biased .it the anode(p- doped material) positive with respect to cathode(n- doped material) --> forward biasedit the anode(p- doped material) negative with respect to cathode(n- doped material) --> reverse biasedex.anode - 5v cathode - 3vanode - 1v cathode - -2vboth the examples are forward biased.
Do the rays produced in cathode tube deflect towards negative plate?
The electron beam produced in the cathode is essentially negative (with respect to the anode), therefore it tends to go towards potentials above the cathode's potential (more positive or less negative, as you wish).
The saturation condition of a triode occurs when the plate is at high voltage values and the grid with respect to the cathode is?
Highly positive
The fact that a cell has an electrical potential difference across its membrane makes that cell what?
The cell membrane is semi-permeable so that charged ions can not diffuse down or up a concentration cell into or out of the cell. There are cell bound proteins that transport charged ions like K+, Na+ and Ca2+ across the cell membrane and the net effect is that the cell is negatively charged ( about -70 mV) with respect to the extracellular space.
Air Force members must avoid relationships that negatively affect morale discipline respect for authority and unit cohesion?
True
What is meant by isotopic effect?
the variton of transition temperature with respect to mass of iostopic electrons
Which chemical family has atoms with the fewest number of electrons?
Elements in group 1 have a lower number of electrons with respect to the other elements in the same period.
How do you know that a body is said to be electrified or charged?
A body is said to be charged when it gains or loses excess of electrons. for example, when it gains 1 electron it becomes negatively charged nd when it loses electrons, it becomes positively charged!
