1. Give the reason why a dielectric material increases capacitance compared with what it would be with air between the plates of a ca- pacitor. What is the independent reason that a dielectric material also allows a greater voltage to be applied to a capacitor? (The die- lectric thus increases C and permits a greater V .) 2. Water has a large dielectric constant, but it is rarely used in ca- pacitors. Explain why. 3. If you wish to store a large amount of energy in a capacitor bank, would you connect capacitors in series or parallel? Explain.
Dielectric Constant Of Water
Water constitutes about 70% of earth. Some important distinguishing properties of water are high molar concentration, small dissociation constant and high dielectric constant.
Electrostatic Potential and Capacitance
An electrostatic force is a force caused by stationary electric charges /fields. The electrostatic force is caused by the transfer of electrons in conducting materials. Coulomb’s law determines the amount of force between two stationary, charged particles. The electric force is the force which acts between two stationary charges. It is also called Coulomb force.
Directions: Discuss briefly the following :
1. Give the reason why a dielectric material increases capacitance compared with what it would be with air between the plates of a ca-
pacitor. What is the independent reason that a dielectric material also allows a greater voltage to be applied to a capacitor? (The die-
lectric thus increases C and permits a greater V .)
2. Water has a large dielectric constant, but it is rarely used in ca-
pacitors. Explain why.
3. If you wish to store a large amount of energy in a capacitor bank,
would you connect capacitors in series or parallel? Explain.
4. How does the energy contained in a charged capacitor change
when a dielectric is inserted, assuming the capacitor is isolated and
its charge is constant? Does this imply that work was done?
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
