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Chapter 19: Q7CQ (page 694)
What is the strength of the electric field in a region where the electric potential is constant?
The electric field鈥檚 strength will be zero in a region with constant electric potential.
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In what region of space is the potential due to a uniformly charged sphere the same as that of a point charge? In what region does it differ from that of a point charge?
The electric field strength between two parallel conducting plates separated by\(4.00\;cm\) is\(7.50 \times {10^4}\;V/m\).
(a) What is the potential difference between the plates?
(b) The plate with the lowest potential is taken to be at zero volts. What is the potential\(1.00\;cm\) from that plate (and\(3.00\;cm\) from the other)?
Find the capacitance of a parallel plate capacitor having plates of area \(5.00\;{m^2}\) that are separated by \(0.100\;mm\)of Teflon.
If the voltage between two points is zero, can a test charge be moved between them with zero net work being done? Can this necessarily be done without exerting a force? Explain.
(a) Will the electric field strength between two parallel conducting plates exceed the breakdown strength for air\(\left( {3.0 \times {{10}^6}\;V/m} \right)\)/ if the plates are separated by\(2.00\;mm\)and a potential difference of\(5.0 \times {10^3}\;V\)is applied?
(b) How close together can the plates be with this applied voltage?
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