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Chapter 19: Q6CQ (page 694)
Discuss how potential difference and electric field strength are related. Give an example.
The electric field strength is a measure of potential gradient at any point in the field \(\Delta V = E \times d\)
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Two parallel conducting plates are separated by \(10.0{\rm{ }}cm\), and one of them is taken to be at zero volts. (a) What is the electric field strength between them, if the potential \(8.00{\rm{ }}cm\) from the zero-volt plate (and \(2.00{\rm{ }}cm\) from the other) is \(450{\rm{ }}V\)? (b) What is the voltage between the plates?
What happens to the energy stored in a capacitor connected to a battery when a dielectric is inserted? Was work done in the process?
Sketch the equipotential lines in the vicinity of the negatively charged conductor in Figure 19.29. How will these equipotentials look a long distance from the object?
(a) A sphere has a surface uniformly charged with \(1.00{\rm{ }}C\). At what distance from its centre is the potential \(5.00{\rm{ }}MV\)?
(b) What does your answer imply about the practical aspect of isolating such a large charge?
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.
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