A parallel plate capacitor with air between the plates, has a capacitance of 2 pF. The plate separation is doubled and a dielectric slab is inserted so that it completely fills the space between the plates. The capacitance of the capacitor becomes 4 pF. The dielectric constant of the slab is:

A parallel plate capacitor with air between the plates, has a capacita

1.	A parallel plate capacitor with air between the plates, has a capacitance of 2 pF. The plate separation is doubled and a dielectric slab is inserted so that it completely fills the space between the plates. The capacitance of the capacitor becomes 4 pF. The dielectric constant of the slab is:
A.	0.5
B.	2
C.	4
D.	8
Answer» D. 8

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A parallel plate capacitor with air between the plates, has a capacitance of 2 pF. The plate separation is doubled and a dielectric slab is inserted so that it completely fills the space between the plates. The capacitance of the capacitor becomes 4 pF. The dielectric constant of the slab is:

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