E) A square capacitor you found in the market with side length of 1cm and thickn
ID: 2292646 • Letter: E
Question
E) A square capacitor you found in the market with side length of 1cm and thickness of 1.2mm, suppose we want to make rough calculations to get some idea about the type of material used as a dielectric medium between its plates, how would you carry this calculations (hint: calculate its dielectric constant g). E) A square capacitor you found in the market with side length of 1cm and thickness of 1.2mm, suppose we want to make rough calculations to get some idea about the type of material used as a dielectric medium between its plates, how would you carry this calculations (hint: calculate its dielectric constant g).Explanation / Answer
The rated capacitance of the capacitor C can be read from the capacitor (Alternatively C can be measured by applying ac voltage V and measure the current I and find capacitive reactance Xc=V/I. From Xc, C can be obtained as C=1/(wXc) where w=2*pi*f where f is frequency of supply).
C=gA/d where A is area and t the thickness of dielectric
Hence, g=Cd/A
g=(C*1.2*10-3)/(1*10-2**1*10-2)
g=C*12
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