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A voltmeter reads 4 V when connected to ...

A voltmeter reads 4 V when connected to a parallel plate capacitor with air as a dielectric. When a dielectric slab is introduced between plates for the same configuration , voltmeter reads 2V. What is the dielectric constant of the material ?

A

0.5

B

2

C

8

D

10

Text Solution

Verified by Experts

The correct Answer is:
B
`epsilon_(r) = (V_(a))/(V_(m)) = (4)/(2) = 2`
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