Capacitance

Question 1

Dielectric constant of 6 meaning

Answer 1

The value of permittivity of medium / permittivity of free space = 6

Question 2

How do dielectrics works?

Answer 2

• electric fields exists between the plates
• polar molecules align with their positive side facing the negative plate
• this produces a counter electric field/ reducing the field between the plates
• the Voltage reduces between the capacitor plates but charge Q remains the same therefore capacitance increases

Question 3

What is one RC

Answer 3

this is the time taken for the intial charge/voltage to reduce to 0.37 of the value

0.37 comes from 1 - e^-1
t/RC = 1