4. Calculate the energy required to assemble the array of charges shown in the figure below, where a = 1.0 m, b = 2.0 m and q = 7.0 µC. 29
4. Calculate the energy required to assemble the array of charges shown in the figure below, where a = 1.0 m, b = 2.0 m and q = 7.0 µC. 29
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Calculate the energy required to assemble the array of charges shown in the figure below, where ? = 1.0 ?, ? = 2.0 ? and ? = 7.0 ??.
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A nonconducting wall carries a uniform charge density of 6.67 µC/cm?. What is the electric
1.
field 2.3 cm in front of the wall? Does your result change as the distance from the wall is
varied?
2. A uniformly charged, straight filament 2.0 m in length has a total positive charge of 3.0 µC.
An uncharged cardboard cylinder 0.5 cm in length and 5.0 cm in radius surrounds the
filament at its center, with the filament as the axis of the cylinder. Using reasonable
approximations, find (a) the electric field at the surface of the cylinder and (b) the total
electric flux through the cylinder.
3. A spherical conductor has a radius of 7.7 cm and charge of 14.0 µC. Calculate the electric
field and the electric potential (a) r = 8.0 cm, (b) r = 15.0 cm, and (c) r = 17.0 cm from
the center.
4. Calculate the energy required to assemble the array of charges shown in the figure below,
where a = 1.0 m, b = 2.0 mand q = 7.0 µC.
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