galvani potential वाक्य
उदाहरण वाक्य
मोबाइल
- First, consider the Galvani potential between two metals.
- However, their Galvani potentials will be different ( unless the metals are identical ).
- Dissimilar metals in contact produce what is known also as a contact electromotive force or Galvani potential.
- Generally, the Galvani potential difference is measurable only when the two phases have identical chemical composition.
- As explained above, we can divide the voltage into two pieces : The galvani potential, and everything else.
- In a traditional metal-insulator-metal capacitor, the galvani potential is the " only " relevant contribution.
- Where the difference on the left-hand side is the Galvani potential difference between the phases ( 1 ) and ( 2 ).
- Therefore, as the capacitor charges or discharges, the voltage changes at a " different " rate than the galvani potential difference.
- At a high aqueous pH, the acid is in the anionic form and can exist in both phases according to the Galvani potential difference.
- When a voltmeter is used to measure an electronic device, it does not quite measure the pure electric potential ( also called Galvani potential ).
- The electric field is not the only factor determining charge flow in a material, and different materials naturally develop electric potential differences at equilibrium ( Galvani potentials ).
- An ITIES system is said " polarised " if the distribution of the different charges and redox species between the two phases determines the Galvani potential difference.
- However, if one or both of the capacitor plates is a semiconductor, then galvani potential is " not " necessarily the only important contribution to capacitance.
- Thus, the Galvani potential difference is determined entirely by chemical difference of the two phases; specifically by the difference of the chemical potential of the charge carriers in the two phases.
- These excited electrons diffuse, and some reach the rectifying junction ( usually a p-n junction ) where they are accelerated into a different material by a built-in potential ( Galvani potential ).
- The Galvani potential difference between an electrode and electrolyte ( or between other two electrically conductive phases ) forms in an analogous fashion, although the chemical potentials in the equation above may need to include all species involved in the electrochemical reaction at the interface.
- For example, a p-n junction in equilibrium, there is a galvani potential ( built-in potential ) across the junction, but the " voltage " across it is zero ( in the sense that a voltmeter would measure zero voltage ).
- The Evanohm family of nickel-chrome alloys [ Ni72Cr20Mn4Al3Si1 ], [ Ni73Cr20Cu2Al2Mn1Si ], have high resistance, low temperature coefficient of resistance, low electromotive force ( Galvani potential ) when in contact with copper, high tensile strength, and also are very stable with regards to heat treatment.
- An ITIES is said " polarisable " if one can change the Galvani potential difference, or in other words the difference of inner potentials between the two adjacent phases, without noticeably changing the chemical composition of the respective phases ( i . e . without noticeable electrochemical reactions taking place at the interface ).
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