A voltmeter reads 4 V when connected to a parallel plate capacito… - Vidyadip

MCQ

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?

A
0.5
✓
2
C
8
D
10

✓

Answer

Correct option: B.

2

(B) 2
$\begin{array}{l}\frac{ q }{ C }=4 \\ \frac{ q }{ kC }=2 \\ k =2\end{array}$

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