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- Cathode abstract "A cathode is an electrode through which electric current flows out of a polarized electrical device. The direction of electric current is, by convention, opposite to the direction of electron flow—thus, electrons are considered to flow toward the cathode electrode while current flows away from it. This convention is sometimes remembered using the mnemonic CCD for cathode current departs.Cathode polarity is not always negative. Although positively charged cations always move towards the cathode (hence their name) and negatively charged anions move away from it, cathode polarity depends on the device type, and can even vary according to the operating mode. In a device which consumes power, the cathode is negative, and in a device which provides power, the cathode is positive: In a discharging battery or a galvanic cell, the cathode is the positive terminal since that is where the current flows out of the device (see drawing). This outward current is carried internally by positive ions moving from the electrolyte to the positive cathode (chemical energy is responsible for this "uphill" motion). It is continued externally by electrons moving inwards, this negative charge moving inwards constituting positive current flowing outwards. For example, the Daniel galvanic cell's copper electrode is the positive terminal and the cathode. In a recharging battery, or an electrolytic cell performing electrolysis, the cathode is the negative terminal, from which current exits the device and returns to the external generator. For example, reversing the current direction in a Daniell galvanic cell would produce an electrolytic cell, where the copper electrode is the positive terminal and the anode. In a diode, the cathode is the negative terminal at the pointed end of the arrow symbol, where current flows out of the device. Note: electrode naming for diodes is always based on the direction of the forward current (that of the arrow, in which the current flows "most easily"), even for types such as Zener diodes or solar cells where the current of interest is the reverse current. In vacuum tubes (including cathode ray tubes) it is the negative terminal where electrons enter the device from the external circuit and proceed into the tube's near vacuum, constituting a positive current flowing out of the device.An electrode through which current flows the other way (into the device) is termed an anode.".
- Cathode thumbnail Copper_cathode_2.svg?width=300.
- Cathode wikiPageExternalLink anode-cathode.htm.
- Cathode wikiPageExternalLink www.crtsite.com.
- Cathode wikiPageID "6944".
- Cathode wikiPageRevisionID "605803738".
- Cathode align "right".
- Cathode caption "Cutaway view of a triode vacuum tube with an indirectly-heated cathode , showing the heater element inside".
- Cathode caption "Two indirectly-heated cathodes in ECC83 dual triode tube".
- Cathode direction "horizontal".
- Cathode hasPhotoCollection Cathode.
- Cathode image "Dubulttriode darbiibaa.jpg".
- Cathode image "Triode-english-text.svg".
- Cathode width "137".
- Cathode width "170".
- Cathode subject Category:Electrodes.
- Cathode comment "A cathode is an electrode through which electric current flows out of a polarized electrical device. The direction of electric current is, by convention, opposite to the direction of electron flow—thus, electrons are considered to flow toward the cathode electrode while current flows away from it. This convention is sometimes remembered using the mnemonic CCD for cathode current departs.Cathode polarity is not always negative.".
- Cathode label "Cathode".
- Cathode label "Cathode".
- Cathode label "Catodo".
- Cathode label "Cátodo".
- Cathode label "Cátodo".
- Cathode label "Kathode".
- Cathode label "Kathode".
- Cathode label "Katoda".
- Cathode label "Катод".
- Cathode label "مهبط".
- Cathode label "カソード".
- Cathode label "陰極".
- Cathode sameAs Katoda.
- Cathode sameAs Kathode.
- Cathode sameAs Cátodo.
- Cathode sameAs Cathode.
- Cathode sameAs Katode.
- Cathode sameAs Catodo.
- Cathode sameAs カソード.
- Cathode sameAs 캐소드.
- Cathode sameAs Kathode.
- Cathode sameAs Katoda.
- Cathode sameAs Cátodo.
- Cathode sameAs m.01_vx.
- Cathode sameAs Q175233.
- Cathode sameAs Q175233.
- Cathode wasDerivedFrom Cathode?oldid=605803738.
- Cathode depiction Copper_cathode_2.svg.
- Cathode isPrimaryTopicOf Cathode.