# What are some ways that the strength of an electric

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Chapter 29 / Exercise 41
Physics for Scientists and Engineers with Modern Physics
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6. What are some ways that the strength of an electric field may be increased around a point charge?
7. What are some ways that the strength of an electric field between two parallel plates be increased?Increasing the charges of the plates, by increasing the battery strength it will increase the plate charges. In addition, decreasing the distance between two plates, increases the strength of an electric field between two plates. Conclusion:In conclusion, in this lab I learned that an electric field is difficult to map directly, however, it can be mapped by using Equipotential Lines. Electric field lines are a way of visualizing the electric field near charged objects. Field lines define the direction of the force that a positive "test" charge experiences near other charges. The field lines are also used to define the magnitude of the electric field. The lines are drawn such that their density (the number of lines that cross a unit area) is proportional to the magnitude of E. Rather than trying to measure electric fields directly; it is easier to measure the electrical potential near the charges. This is an easier measurement because electric potential does not have a direction (it’s a scalar) and can be measured with a voltmeter. The electrical potential is the potential energy of the test charge divided by the test charge.Consider a test charge that is made to move in the presence of one or more other charges in such a direction that it does not experience any change in electrical potential energy. The path of this test charge is perpendicular to the electric field at every point of its motion, and is called an equipotential line. No work is done to move the test charge; its potential energy does not change. We define electrical potential as the electrical potential energy divided by the test charge. The unit of electrical potential is the Volt. Work against the electric field happens only when the charge is moved with a component parallel to the E field; thus, equipotential lines are perpendicular to the E field. Devices that measure electric potential are voltmeters which are inexpensive and readily available. The equipotential lines, V, measured with the voltmeter can then be used to map the electric field lines, E which is what we ended up doing in this lab.
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Chapter 29 / Exercise 41
Physics for Scientists and Engineers with Modern Physics
Jewett/Serway Expert Verified
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