Gold-leaf electroscope uses

1 answer:

7 0

-identifies an electric charge
-it can identify its polarity (positive or negative) if you compare it to a charge that you already know
-can identify the magnitude of a charge (how big of a charge it is)

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<h3><u>Answer;</u></h3>

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The electric field strength in the space between two closely spaced parallel disks is 1.0 105 N/C. This field is the result of t

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$D=2.996\times 10^{-2} m$

Explanation:

*Assume the parallel disks have equal diameters.

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$E=\frac{\eta}{\epsilon_o}=\frac{Q}{A\epsilon_o}\\\\A=\frac{Q}{E\epsilon_o}\\\\=\frac{(3.9\times 10^9)\times (1.6\times10^{-19})}{(1.0\times 10^5 )\times (8.85\times10^{-12})}\\\\A=7.0508\times 10^{-4} \ m^2$

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