Concepts Of Physics MCQ Edition [Volume 2]
- Exam
- Concepts Of Physics MCQ Edition [Volume 2]
- Subject
- Physics
- Chapter
- Capacitors
Concepts Of Physics MCQ Edition [Volume 2] · Physics · Capacitors
If the aforementioned capacitor is connected across a 6.0 V...
If the aforementioned capacitor is connected across a battery, determine the induced charge on the dielectric.
Options
- A
- B
- C
- D
Correct answer
C.
Step-by-step solution
The induced charge on the dielectric is given by the formula:
q_{ind} = Q \left(1 -\dfrac{1}{K}\right)
where is the total charge on the capacitor plates and is the dielectric constant of the material.
When the capacitor is connected across a battery of voltage , the charge on the plates with the dielectric inserted is:
Substituting this into the induced charge formula, we get:
q_{ind} = K C_0 V \left(1 -\dfrac{1}{K}\right) =
Based on standard problem parameters (e.g., a parallel plate capacitor with area , separation , and dielectric constant ), the initial capacitance is:
\dfrac{\epsilon_0 A}{d} = \dfrac{8.854 \times 10^{-12} \times 400 \times 10^{-4}}{1.0 \times 10^{-3}} =
Using the given battery voltage :
Answer:
q_{ind} = Q \left(1 -\dfrac{1}{K}\right)
where is the total charge on the capacitor plates and is the dielectric constant of the material.
When the capacitor is connected across a battery of voltage , the charge on the plates with the dielectric inserted is:
Substituting this into the induced charge formula, we get:
q_{ind} = K C_0 V \left(1 -\dfrac{1}{K}\right) =
Based on standard problem parameters (e.g., a parallel plate capacitor with area , separation , and dielectric constant ), the initial capacitance is:
\dfrac{\epsilon_0 A}{d} = \dfrac{8.854 \times 10^{-12} \times 400 \times 10^{-4}}{1.0 \times 10^{-3}} =
Using the given battery voltage :
Answer: