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CBSE Class 12-science Answered

what is dielectric constant?
Asked by ns718174 | 04 Nov, 2018, 02:59: PM
answered-by-expert Expert Answer
Dielectric constant is the ratio of the permittivity of a substance to the permittivity of free space.
It is an expression of the extent to which a material concentrates electric flux.

 As the dielectric constant increases, the electric flux density increases, if all other factors remain unchanged.
This enables objects of a given size, such as sets of metal plates separated by material of high dielecric constant,
to hold their electric charge for long periods of time,and/or to hold large quantities of charge.
 
Materials with high dielectric constants are useful in the manufacture of high-value capacitors.
 
Answered by Thiyagarajan K | 05 Nov, 2018, 02:29: AM

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