Explore topic-wise MCQs in Physics.

This section includes 8 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.

1.

In a parallel plate capacitor, the capacitance increases from 100 F to 800 F, on introducing a dielectric medium between the plates. What is the dielectric constant of the medium?

A. 0.125
B. 125
C. 80
D. 8
Answer» E.
Discussion
2.

How does the capacitance change with the effect of the dielectric when the battery is kept disconnected from the capacitor?

A. Increases
B. Decreases
C. Remains constant
D. Zero
Answer» B. Decreases
Discussion
3.

The charge on the capacitor plates decreases from Q0 to Q with the effect of the dielectric when the battery remains connected across the capacitor.

A. True
B. False
Answer» C.
Discussion
4.

How does the electric field change with the effect of the dielectric when the battery remains connected across the capacitor?

A. Increases
B. Decreases
C. Remains unchanged
D. Zero
Answer» D. Zero
Discussion
5.

How does the capacitance change with the effect of the dielectric when the battery remains connected across the capacitor?

A. Increases
B. Decreases
C. Zero
D. Remains constant
Answer» B. Decreases
Discussion
6.

How does the potential difference change with the effect of the dielectric when the battery remains connected across the capacitor?

A. Increases
B. Decreases
C. Remains constant
D. Becomes zero
Answer» D. Becomes zero
Discussion
7.

How does the potential difference change with the effect of the dielectric when the battery is kept disconnected from the capacitor?

A. Increases
B. Decreases
C. Remains constant
D. Becomes zero
Answer» C. Remains constant
Discussion
8.

What is the dielectric constant of the medium if the capacitance of a parallel plate capacitor increases from 40F to 80F on introducing a dielectric medium between the plates?

A. 20
B. 0.5
C. 2
D. 5
Answer» D. 5
Discussion