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we know that electrical field strength,E,can be counted by equation

1. E=V/d,or

2. E=Qq/4[tex]\pi[/tex][tex]\epsilon[/tex]r

In the circuit with capacitor, the potential difference ,V is decided by battery.So from the first equation ,the E is not affected by permittivity(dielectric material) but it does affected according to second equation.

What is the correct explanation of the electrical force between plates??

1. E=V/d,or

2. E=Qq/4[tex]\pi[/tex][tex]\epsilon[/tex]r

^{2}In the circuit with capacitor, the potential difference ,V is decided by battery.So from the first equation ,the E is not affected by permittivity(dielectric material) but it does affected according to second equation.

What is the correct explanation of the electrical force between plates??

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