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21.02.2020 •
Physics
Two charged concentric spherical shells have radii of 11.0 cm and 14.0 cm. The charge on the inner shell is 3.50 ✕ 10−8 C and that on the outer shell is 1.60 ✕ 10−8 C. Find the magnitude of the electric field at the following points.
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Ответ:
The magnitude of the electric field are
and ![1.09\times10^{4}\ N/C](/tpl/images/0518/8269/cab49.png)
Explanation:
Given that,
Radius of inner shell = 11.0 cm
Radius of outer shell = 14.0 cm
Charge on inner shell![q_{inn}=3.50\times10^{-8}\ C](/tpl/images/0518/8269/7cc9c.png)
Charge on outer shell![q_{out}=1.60\times10^{-8}\ C](/tpl/images/0518/8269/07b92.png)
Suppose, at r = 11.5 cm and at r = 20.5 cm
We need to calculate the magnitude of the electric field at r = 11.5 cm
Using formula of electric field
Where, q = charge
k = constant
r = distance
Put the value into the formula
The total charge enclosed by a radial distance 20.5 cm
The total charge is
Put the value into the formula
We need to calculate the magnitude of the electric field at r = 20.5 cm
Using formula of electric field
Put the value into the formula
Hence, The magnitude of the electric field are
and ![1.09\times10^{4}\ N/C](/tpl/images/0518/8269/cab49.png)
Ответ: