UMass Amherst PHYSICS 132 - Physics 132 3 Lab (2 pages)

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Physics 132 3 Lab

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Physics 132 3 Lab

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Pages:
2
School:
University of Massachusetts Amherst
Course:
Physics 132 - Intro Physics II
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Electric Fields Physics 132 Thursdays 9 00 AM ILC S110 Abstract In this experiment we explored the properties of electric fields Using a pair of field probes and voltmeter we measured the direction and strength of the electric field on the surface of the paper The red probe corresponding to a positive charge and a black resorting to a negative charge we were able to see how the direction changed based on location in relation to these two probes Questions Answers 1 What do the electric field lines represent 2 points They represent the magnitude and direction of the electric field electric They represent what the field looks like geometrically They can be represented in a line straight or curved along which a unit positive charge moves if it placed in the presence of a source charge 2 What are the primary similarities and differences between the electric fields surrounding each electric contacts on the field board i e the positive and negative contacts 2 points Electric field lines due to both positive and negative charges represent electric field However they differ in electric field lines due to a positive charge move outwards away from the charge while as the lines of force due to negative charge charge move inwards towards the negative charge 3 Where was the electric field strongest for each electric contact Explain your answer 2 points Electric field is strongest where the electric field lines are closer for both charges the electric field is stronger near the charge because it has the most contact with the charge and the lines around it 4 Would the shape of the electric field lines for the two electric contacts change if you increased the voltage across the electric contacts on the field board Explain your answer 2 points If we increase the voltage the electric field intensity will increase That means the electric field lines will come closer to each other but the shape of lines will remain same you will see more lines closer together on the image 5 For the

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