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Last Updated On 23-10-2022 - By Sara

A parallel plate capacitor is made of two square plats of side ‘a’, separated by a distance d (d<<a).  The lower triangular portion is filled with a dielectric of dielectric constant K, as show in the figure. Capacitance of this capacitor is:

a.

 

b.

ln K

c.

 

d.

 


Question ID - 50049 :-

A parallel plate capacitor is made of two square plats of side ‘a’, separated by a distance d (d<<a).  The lower triangular portion is filled with a dielectric of dielectric constant K, as show in the figure. Capacitance of this capacitor is:

a.

 

b.

ln K

c.

 

d.

 

1 Answer
5876 Votes
3537

Answer Key : (c) -

 

 

 

dy=

=

=

=

C= 0a.

=

= ln

= ln =



Next Question :

Mobility of electrons in a semiconductor in defined as the ratio of their drift velocity of the applied electric field.  If, for an n-type semiconductor, the density of electrons is 1019m−3 and their mobility is 1.6m2(v.s) then the resistivity of the semiconductor(since it is an n-type semiconductor contribution of holes is ignored) is close to:

a.

2 Ωm

b.

0.4 Ωm

c.

4 Ωm

d.

0.2 Ωm


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