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What current always travels from the negative electrode to the positive electrode?
Wiki User
∙ 6y ago
I don't believe so if my memory is correct. The way an auto mechanic explained it to me was "it's easier to understand and see in a schematic". Here is a question another teacher had ask, why is the electrode on a spark plug a positive ground? I never did find out why!! Although this knowledge will never do me a lick of good, I would still like to know. Arthunt31@gmail.com. 11/15/11
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Conventional current flow is from positive to negative. Electron flow is from negative to positive.
Wiki User
∙ 12y ago
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What is the function of a salt bridge in a voltaic cell?
A salt bridge is an important component of an electrochemical cell. This type of cell can produce an electric current as a product of a chemical reaction type known as oxidation-reduction (also known as redox). The cell reaction is divided into two parts: oxidation (electron loss) and reduction (electron gain). The salt bridge exists to provide the electrical connection between the two reaction vessels while keeping the two reactions separate. The salt bridge allows the electron transfer between the two vessels.
What did eugen goldstein contribute in the history of atom?
He is sometimes called the discoverer of protons. He did experiments with cathode ray tubes, which knock electrons off atoms and attract them to a positively-charged electrode (the cathode). He noticed that a second stream of particles was attracted to the negatively-charged electrode (the anode), so he called them anode rays. However, it was left to one of his students to discover that these rays were sometimes pure protons. His experiments gave him a picture of atomic structure that was decades ahead of its time, and similar to what we know today. However, he did not follow up on his work, and was largely ignored by his peers.
What do you call a path along which electricity travels?
an open circuit
What is the definition of ac electricity and dc electricity?
AC means alternating current and DC means direct current. The amplitude of AC voltage and current varies with time. Traditional AC electricity used in homes in the United States is a 60 Hertz sine wave. This means that 60 cycles of a sine wave occur every 1 second. Since AC voltage varies with time, the amplitude at each instant is different. The voltage changes from 0 to +Vpeak to 0 to -Vpeak and so on. Since the amplitude is always changing, the voltage quoted for AC such as 120 Vac for US homes is an average known as the Root Mean Square (RMS). The general formula for determining the amplitude of the voltage at any given time is: Vinst = Vpeak x sin(t) where Vinst is the instantaneous voltage at time t, Vpeak is the peak voltage, and t is the time. The relationship between Vrms and Vpeak for a sine wave is given by the formula Vrms = Vpeak / square root (2), so Vrms = Vpeak x 0.707 DC electricity does not vary with time. The voltage and current are constant at all times.
What is the name given to the current that transfers hot air from a radiator?
I think you mean a convection current. A convection current is the movement of fluids (gases and liquids) caused by density changes in various parts of the fluid. But a convection current can occur only from where the air output is present.( eg: Top of the radiator. ) The heat that you feel from the sides is due to IR waves (Radiation). Radiation can travel through an medium, and even without a medium, because of the fact that travels in the form of IR waves. Hope this helped! :-)
When welding with DCEN the electrode is positive and the work is negative?
DCEN means Direct Current Electrode Negative. Hook the welding cable to the Positive connection (+) on the machine, the ground cable to the Negative connection (-) Electricity travels from Negative pole to Positive pole.
What polarity is used for stick welding?
Reverse. Using a D C machine, electricity travels from the negative post to the positive post. Connecting the electrode holder to the positive post and the ground clamp to the negative post means the current flows from the work to the electrode - reverse polarity. In A C machines it doesn't matter which post the electrode holder is connected to.
Reverse polarity in welding?
Immediate and catastrophic destruction of transistors and/or diodes. While that does not ALWAYS occur, it's certainly possible. Start with the alternator. No doubt those diodes have been destroyed if a battery has been connected with reverse polarity.
The path that a electrical current travels?
A path that is made for an electric current is called a circuit. The two main components in a circuit are the load and a source which are combined with conductors and as a whole form a circuit.
What direction does dc Voltage travel in?
It travels from negative to positive. The opposite of what you might think.
What electricity travels through?
electricity can travel through anything with a positive and negative electrical charge
Electric waves and magnetic waves move in directions that are?
Electric and Magnetic currents travel from Positive to Negative. a batteries charge travels from the + end to the - end. and a Magnet travels from North to South.
Is lightning positive or negative?
the charge of a lightning is positive and negative. The positive is on the top of a lightning cloud and the negative is surrounded on the bottom. As it flashes down it is a negative. However, the ground is a positive charge so as it reaches down, it turns into a positive charge. I hope this will answer you question
Why you are using DC welding machine?
DC (Direct Current) means the current flows in one direction. It can flow from negative to positive or from positive to negative. AC (Alternating Current) means it travels in both directions. From neg to pos then stops reverses itself and travels from pos to neg. Here in the U.S. this happens at 60 times per second (60 cycles). DC produces a smoother flowing current and is easier to use. Picture a stream of water flowing. Now picture that stream flowing forward then stopping then flowing back then stopping and flowing forward again 60 times per second. Messy huh? AC does have the advantage of releasing more heat and is used in GTAW Aluminum. AC machines are cheaper to produce and cost less.
How do you find the total momentum of 2 objects moving at the same speed in opposite directions?
(1) Decide on a direction that you will consider positive. (2) Calculate the momentum of the object that travels in the "positive" direction. (3) Calculate the momentum of the object that travels in the "negative" direction (the momentum should be negative). (4) Add both numbers algebraically.
Which of these statements does not describe electricity?
electricity cools down devices as it travels through them Electricity acts in ways similar to ice, which is a solid.
Trans former can not run with ac why?
It does A transformer is an electrical device used to convert AC power at a certain voltage level to AC power at a different voltage, but at the same frequency. Normal supply DC (Direct Current) won't work without some changes to how it travels. The DC is turned on and off quickly in the primary coil, and this action will allow the pulsating that DC in the primary to drive the secondary transformer. Remember AC alternated between a positive currect and a negative current where Dc is positive then drops to zero then back to positive
