Electronics and Communication Engineering - Materials and Components - Discussion
Discussion Forum : Materials and Components - Section 7 (Q.No. 31)
31.
A vacuum parallel plate capacitor is charged. The field between the plates is 2 x 104 V/m. If the space between the plates is filled with a material having ∈r = 10, then the value of field in the dielectric will be
2 x 103 V/m
x 104 V/m210 x 104 V/m
2 x 105 V/m
Answer: Option
Explanation:
D ∝ ∈rE. The flux density is the same.
Since ∈r has become 10 times, E decreases by 10 times.
Discussion:
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