IB HL Physics Dielectrics and capacitors
/A tutorial sheet with dielectric questions is given below.
- What is a dielectric?
- What does dielectric constant mean?
- Plastic has a dielectric constant of 2.8. Find the permittivity of plastic.
- A block of plastic is placed in a uniform electric field. Is the electric field strength in the plastic greater than, equal to or less than the electric field strength outside the plastic?
- A block of dielectric fills the space between the parallel plates of a capacitor that is connected to a source of constant emf. Is the capacitance increased, stays the same or decreased when the dielectric is inserted?
- A block of dielectric fills the space between the parallel plates of an isolated charged capacitor. Is the capacitance increased, stays the same or decreased when the dielectric is inserted?
