Problems
practice
- The electric field near the surface of the Earth has a magnitude of approximately 150 V/m and points downward. Determine the following quantities for the Earth…
- the net charge (including sign)
- the surface charge density in coulombs per square meter (including sign)
- the surface charge density in elementary charges per square meter (indicate wheter the charge is due to an excess or deficit of electrons)
- Two conducting spheres are concentrically nested as shown in the cross-sectional diagram below. The inner sphere has a radius of 3 cm and a net charge of +12 μC. The outer spherical shell has an inner radius of 6 cm, an outer radius of 8 cm, and a net charge of −6 μC.
- Determine the net charge on the…
- inner surface of the outer spherical shell
- outer surface of the outer spherical shell
- Complete the following table.
distance from center (cm) |
electric field (MV/m) |
electric potential (MV) |
direction |
magnitude |
0 |
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1 |
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2 |
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3 |
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4 |
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5 |
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6 |
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7 |
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8 |
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9 |
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10 |
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- Sketch the following quantities as functions of distance from 0 to 10 cm.
- magnitude of the electric field
- electric potential
- Write something.
- Write something completely different.
conceptual
- problem