An electric field of 8.5X10^5 V/m is desired between two parallel plates each of areas 2500 cm^2 and separated by 0.10 mm of air. What charge must be on each plate?

Respuesta :

Answer:

The charge must be on each plate is [tex]1.881\times10^{-6}\ C[/tex].

Explanation:

Given that,

Electric field [tex]E= 8.5\times10^{5}\ V/m[/tex]

Area = 2500 cm²

Distance = 0.10 mm

We need to calculate the potential difference

Using formula of potential difference

[tex]\Delta V=E\times d[/tex]

[tex]\Delta V=8.5\times10^{5}\times0.10\times10^{-3}[/tex]

[tex]\Delta V=85\ V[/tex]

We need to calculate the capacitor

Using formula of capacitor

[tex]C=\dfrac{\epsilon_{0}\times A}{d}[/tex]

Put the value into the formula

[tex]C=\dfrac{8.85\times10^{-12}\times2500\times10^{-4}}{0.10\times10^{-3}}[/tex]

[tex]C=2.2125\times10^{-8}\ F[/tex]

We need to calculate the charge

Using formula of charge

[tex]Q=C\times\Delta V[/tex]

[tex]Q=2.2125\times10^{-8}\times85[/tex]

[tex]Q=1.881\times10^{-6}\ C[/tex]

Hence, The charge must be on each plate is [tex]1.881\times10^{-6}\ C[/tex].

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