Electromagnetic
Presentation
•
Physics
•
9th Grade
•
Practice Problem
•
Easy
Diastati Puspita
Used 9+ times
FREE Resource
36 Slides • 43 Questions
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When ______ passes through the coil, it experiences a ______ because it is in a magnetic ______. This causes the coil to rotate. When the current increases, the force will be ______ and so the pointer will move ______ on the scale.
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a. Describe two ways in which the student could reverse the effect to make the wire move downwards.
b. The student moves the wire so that it passes from the north to the south pole of the magnet as shown in Figure 20.20. Explain why the wire does not move.
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Which of the following pairs of changes will both increase the strength of an electric motor?
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