A Parallel-Plate Capacitor Stores Charge Q

question 2

Multiple Choice

A parallel-plate capacitor stores charge Q.The capacitor is then disconnected from its voltage source,and the space between the plates is filled with a dielectric of constant κ = 2.What is the relationship between the stored energies of the capacitor,where PE_i is the initial stored energy,and PE_f is the stored energy after the dielectric is inserted?​

• A)​PEf = 0.25PE_i
• B)​PEf = 0.5PE_i
• C)​PEf = PE_i
• D)​PEf = 2PE_i

---

Definitions:

Hypothesis

A testable prediction or statement about the relationship between two or more variables that can be tested through research.

Variables

Variables are characteristics or properties that can take on different values or categories in a research study, such as age, gender, income, etc., crucial for analyzing patterns and relationships.

Ontological Questions

Questions related to the nature of being, existence, or the structure of reality.

Language

A system of communication used by a particular community or country, consisting of written, spoken, or signed words and symbols following specific grammatical rules.