Open the following webpage and then click on the Run Now but

Open the following webpage, and then click on the “Run Now” button http://phet.colorado.edu/en/simulation/capacitor-lab

With the separation 5 mm, disconnect the battery.

A)What happens to charge when the plate separation is increased, and why?

B)What happens to the voltage when the plate separation is increased, and why?

C)What happens to the strength of the field when plate separation is increased? (You can use the field meter to check this.

Solution

here,

part A)

when the battery is disconnected the battery , as there is no flow of charge after the disconnection.

the charge will be same when the plate seperation is increased.

B)

when the seperation is increased

as C = epsilon * Area/d

when d is increased , the capacitance will decrease

as Q = C * V

as charge is fixed , then the potential will increase.

C)

as electric field = surface charge density/epsilon

as charge and area are constant

eletric field is constant