JAMB - Physics (2024 - No. 22)
If a sheet of an insulating material is inserted between the plates of an air capacitor, the capacitance will
become zero
decrease
increase
remain unchanged
解释
If a sheet of an insulating material (dielectric) is inserted between the plates of an air capacitor, the capacitance will increase.
When a dielectric material is inserted: The permittivity \(\epsilon\) increases (since the permittivity of the dielectric is greater than that of air),
This results in an increase in capacitance.