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 2 V. What is the dielectric constant of the material?
Text Solution
Verified by ExpertsThe correct answer is:
D
Let V 0 be the potential difference between the plates of an air filled parallel plate capacitor.
When a dielectric slab is introduced between its plates, its potential difference will become
where K is the dielectric constant of the slab.
Here,
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