LAB ORATORT 20 Equipotentials and Electric Fields PRE-LABORATORY ASSIGN MENT 1.
ID: 1532971 • Letter: L
Question
LAB ORATORT 20 Equipotentials and Electric Fields PRE-LABORATORY ASSIGN MENT 1. Electric field lines are drawn a from positive chargestonegative charges bl from negative charges to positive charges from the largest charge to the smallest charge d from the smallest charge to the largest charge. 2. The points where the potential is the same 0in three-dimensional space) have the same voltage. (a) True (b) The points where the potential is the same (in three-dimensional space lie on a surface, la True (b) False 4. The relationship between the direction of the electric field lines and the equipotential surfaces is (a field lines are everywhere parallel to surfaces (b) field lines always intersect each other c field lines are everywhere perpendicular tosurfaces (d) field lines always make angles between 0 and 90 with surfaces. 5. Why are the measured equipotentials lines instead of surfaces for this laboratory? 6. If two electrodes have a source of potential difference of 100V to them, how many equipotential surfaces exist in the space between them? 7, Why is it important to center the electrodes on the resistance paper for this laboratory? s. In the performance of this laboratory, what is the recommended maximum allowed potential difference from one end of an electrode to the other end? 9. On what basis are you to decide how many points to measure for each equipotential for a given electrode configuration?Explanation / Answer
(a)From a positive charge to a negative charge.
Its a fact that the electric field lines originate from a pocitive charge and terminate on a negative charge.
2)True
Those are the points of same potential.
3)True
4)(c)field line are always perpendicular to the surface.
Its a fact that electric field and equipotential lines are always perpendicular to each other.
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