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How can you identify a cathode negative to an LED?
The anode (negative) is red. The cathode (positive) is black. whoever wrote this^^^ is stupid and can't read. while what they said is right, that only applies to wires. with LEDs, the shorter wire i the negative, and the longer one is positive. sometimes you might find one that's the same length, easy way to test them is to just put them to opposite ends of a battery.
Why voltage across capacitor goes to zero when wires connected to each terminal of charged capacitor are brought into contact?
The voltage goes to zero because a current path has been created between the positive and negative elements of the capacitor, discharging the stored charge and putting both the anode and cathode of the capactor at the same electrical potential. Thus, no voltage difference between them, which is why the voltmeter reads zero.
When a 10mA forward bias current and the voltages at the anode and cathode of a diode in a circuit are found to be the same what is the diode most likely to be?
With a 10mA forward bias current, if the voltages at the anode and cathode of a diode in a circuit are found to be the same, then the diode most likely to be shorted.
What is the relation with charge on electrons to electron flow in a circuit?
Not entirely sure what the point of the question is, but here are two of the relations between the charge of the electron and electron flow in a circuit; I hope this helps.1. The electron has a negative charge. This is an accident of history; there's really nothing fundamentally "negative" about the electron charge, it's just that some some particles have one kind of charge and others have an opposite one, and the the sign of the charge was assigned before electrons had really been discovered. The choice was arbitrary and could have gone either way, but electrons just happened to end up negative. You can blame Ben Franklin for it. But I digress.Electric current is defined as flowing from positive to negative. If the mobile charge carriers are positively charged, then they are flowing in the same direction as the current. But if the mobile charge carriers are negative - like electrons, which are the carriers in metals - then the carriers are flowing in the opposite direction from the current. In other words, the electrons flow "backwards" because they are negative, because Ben Franklin just happened to write '+' and '-' in the "wrong" places (though he couldn't possibly have known.)2. The electron charge is -1.6×10-19 Coulombs. To put that another way, one Coulomb is about 6.24×1018 electrons worth of charge. Since one Ampere is the flow of one Coulomb of charge per second, it is also a flow rate of 6.24×1018 electrons per second. That's more than six billion billion electrons each second for each Ampere!
Why are LEDs different lengths?
To make it easier to see which is positive - anode, and which is negative - cathode. You need to know that, because the LED will only light if the positive and negative terminals of the battery are connected to the correct sides of the LED.
Why did j.j reason the electrons must be a part of the atoms of all elements?
Cathode rays are negatively-charged particles.
Why are cathode electrons attracted to anode?
The force between charges is repulsive between charges with the same sign, and attractive between charges with opposite signs. The cathode is charged negative, and the anode is charged positive. Electrons have a negative charge. So any electron in the neighborhood of a pair of charged electrodes will be repelled by the cathode and attracted to the anode.
Is a cathode-ray tube and an iconoscope the same thing?
No. A cathode ray tube uses cathode rays to (among other things) scan a phospher and generate an image. An iconoscope is similar, in that its uses cathode rays to scan, but it scans a light sensitive area so, instead of generating an image, the iconoscope scans an image. It is a television camera, instead of a television set, so to speak.
Is negative charge magnatice charge?
No it is NOT the same: Charge ( + or - ) is a different property from magnetisme (N? or S?)
Do have electrons negative charge?
Yes it does. If that isn't enough to blow your mind yet, then consider this:Every electron has exactly the same amount of negative charge.
Are neutron and electron have the same charge yes or no?
No, neutrons have a neutral charge and electrons have a negative charge. Protons have a positive charge.
Why value of hall coefficient is negative?
The Hall coefficient has the same sign as the charge carrier. The charge carrier in a normal electric current, the electron, is negative, and as a result the Hall coefficient is negative.
Does an electron or proton have a larger charge?
No. The electron and proton have the same amount of charge. Its just that the electron's charge is negative and the proton's charge is positive.
What charge does of nitrite ion have?
Nitrite (NO2) has a negative one (-1) charge (the same as a nitrate ion)
How you defined briefly negative charge without using mass of electron?
The charge has nothing to do with the mass, so there's no difficulty: A negative charge is one having the same sign as the charge on an electron. If you don't want electrons mentioned at all: A negative charge is one having the opposite sign as the charge on a proton.
How can a negative charge become neutral?
A negative charge in an atom is neutralized bylosing electrons, so there are the same name protons as there are electronsor having a cation (a positive ion) to form with the negative ion.
Is there an affect on the mass of an object with a negative charge?
If you compare the mass of a positron to an electron, or of a proton to an anti-proton, and so forth, the mass is the same, even though the charge is reversed. Negative charge does not mean negative mass, it has no bearing on the mass.
