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2. Directions of the fields are indicated on field lines. Why are no directions indicated on equipotential lines?

2. Directions of the fields are indicated on field lines. Why are no directions indicated on equipotential lines?

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References:

  1. https://www.youtube.com/watch?v=WcSSWN4Tnoo
  2. https://www.youtube.com/watch?v=IJgzVaTPEow
  3. https://phet.colorado.edu/sims/html/charges-and-fields/latest/charges-and-fields_en.html

 

 

2. Directions of the fields are indicated on field lines. Why are no directions indicated on equipotential lines?
Transcribed Image Text:2. Directions of the fields are indicated on field lines. Why are no directions indicated on equipotential lines?
Experiment No. 1 Equipotential and Electric Fields 3. Using the second probe point as a new negative probe point, arrangement on the paper, and label the poles N and S. Using a repeat the procedure to determine another point of maximum meter small compass, trace out (marking on the paper) the magnetic field reading, and record. Continue this procedure until the positive lines as smooth curves. Draw enough field lines so that the pattern of the magnetic field can be clearly seen. Do not forget to indicate the field direction on the lines. I. OBJECTIVES electrode is approached. Draw a smooth curve through these points on the graph-paper map. Describe clearly the concept of a force field. Explain lines of force and the associated physical interpretations. Then, starting again at a new position near the negative Distinguish between lines of force and equipotential, and describe electrode, repeat these procedures for another field line. Trace 4. Draw dashed-line curves perpendicular to the field lines. their relationships to work. out four to six field lines in this manner. Do not forget to indicate the field direction on the lines. II. THEORY III. EQUIPMENT 4. Place the negative probe near the center of the field region, and rotate the positive contact until a position is found that Field mapping board and probes Conducting sheets with grids Conducting paint gives a zero-meter reading. Record several of these points on • Connecting wires the graph paper with a symbol different from that used for the DC power supply (10V) field lines. Check the zero on the voltmeter frequently, Voltmeter particularly when changing scales. Use the second point as a new pivot point, as before, and determine a series of null (zero) points. Draw a dashed-line curve through these equipotential points. Determine three five equipotential lines in this manner. IV. PROCEDURE Electric Field 1. Draw the electric dipole configuration on a sheet of graph paper to the same scale and coordinates as those of the painted dipole on the imprinted grid on the conducting sheet. Then place the 5. Repeat this procedure for the parallel linear (plate) electrode dipole conducting sheet on the board, and set the contact configuration. Be sure to investigate the regions around the terminals firmly on the painted electrode connections. ends of the plate electrodes. 2. For the voltmeter, the field probe should have Magnetic Field 1. Covering the magnets with sheets of paper or transparency material, sprinkle iron filings to obtain an iron filing pattern for each of mounted about 2 cm apart. Connect the voltage source (10-V dc) to the board terminals. the arrangements shown in Figure 0000 2832 W699 ic) For the bar magnet arrangements, the magnets should be separated by several centimeters, depending on the pole strengths of the magnets. Experiment with this distance so that there is enough Position the negative (-) contact of the field probe near the negative electrode. Using the negative probe point as a space between the ends of the magnets to get a good pattern. pivot, rotate the positive (+) contact around the fixed negative contact until the position with the maximum meter reading is 2. Sketch the observed magnetic field patterns on Figure. After the found. patterns have been sketched, collect the iron filings on a piece Record the positions of the probe contacts on the graph- of paper and return them to the filing container. раper map. 3. Place the magnets for each arrangement on a piece of graph paper or regular paper. Draw an outline of the magnets for each 2
Transcribed Image Text:Experiment No. 1 Equipotential and Electric Fields 3. Using the second probe point as a new negative probe point, arrangement on the paper, and label the poles N and S. Using a repeat the procedure to determine another point of maximum meter small compass, trace out (marking on the paper) the magnetic field reading, and record. Continue this procedure until the positive lines as smooth curves. Draw enough field lines so that the pattern of the magnetic field can be clearly seen. Do not forget to indicate the field direction on the lines. I. OBJECTIVES electrode is approached. Draw a smooth curve through these points on the graph-paper map. Describe clearly the concept of a force field. Explain lines of force and the associated physical interpretations. Then, starting again at a new position near the negative Distinguish between lines of force and equipotential, and describe electrode, repeat these procedures for another field line. Trace 4. Draw dashed-line curves perpendicular to the field lines. their relationships to work. out four to six field lines in this manner. Do not forget to indicate the field direction on the lines. II. THEORY III. EQUIPMENT 4. Place the negative probe near the center of the field region, and rotate the positive contact until a position is found that Field mapping board and probes Conducting sheets with grids Conducting paint gives a zero-meter reading. Record several of these points on • Connecting wires the graph paper with a symbol different from that used for the DC power supply (10V) field lines. Check the zero on the voltmeter frequently, Voltmeter particularly when changing scales. Use the second point as a new pivot point, as before, and determine a series of null (zero) points. Draw a dashed-line curve through these equipotential points. Determine three five equipotential lines in this manner. IV. PROCEDURE Electric Field 1. Draw the electric dipole configuration on a sheet of graph paper to the same scale and coordinates as those of the painted dipole on the imprinted grid on the conducting sheet. Then place the 5. Repeat this procedure for the parallel linear (plate) electrode dipole conducting sheet on the board, and set the contact configuration. Be sure to investigate the regions around the terminals firmly on the painted electrode connections. ends of the plate electrodes. 2. For the voltmeter, the field probe should have Magnetic Field 1. Covering the magnets with sheets of paper or transparency material, sprinkle iron filings to obtain an iron filing pattern for each of mounted about 2 cm apart. Connect the voltage source (10-V dc) to the board terminals. the arrangements shown in Figure 0000 2832 W699 ic) For the bar magnet arrangements, the magnets should be separated by several centimeters, depending on the pole strengths of the magnets. Experiment with this distance so that there is enough Position the negative (-) contact of the field probe near the negative electrode. Using the negative probe point as a space between the ends of the magnets to get a good pattern. pivot, rotate the positive (+) contact around the fixed negative contact until the position with the maximum meter reading is 2. Sketch the observed magnetic field patterns on Figure. After the found. patterns have been sketched, collect the iron filings on a piece Record the positions of the probe contacts on the graph- of paper and return them to the filing container. раper map. 3. Place the magnets for each arrangement on a piece of graph paper or regular paper. Draw an outline of the magnets for each 2
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