Electric Charge And The Electric Field

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EXPERIMENT #1: ELECTRIC CHARGE AND THE ELECTRIC FIELD PHY 2092-10 By: Kamal Aljohani Date Performed: 12 January 2015 Date Submitted: 30 January 2015 Lab Partners: Martynas Mickus Sean Small Instructor: Robert J Lucia INTRODUCTION: The purpose of this experiment is to analyze the static electricity, electrical charge, charge grounding, inducing charge, and electric polarization. We used two wands that created positive and negative charges when rubbed together one is blue and the other is white. We put one of the wands inside the pail attached to the electrometer to read the wand’s voltage. In the second part of the experiment, a conductive sphere was applied 2000 volts, and voltage’s readings were taken at different locations on…show more content…
When we used both wands, the electrometer almost read zero volts throughout the duration of the experiment. This proves that the negativity of the particles on the blue wand were equal to the positive charge of the particles on the white wand; so it cancelled each other out. While using the both wands we encountered an error. The voltage should have been zero when the wands was out the pail and not touching the pail; however the electrometer reading was -3 volt. This is most likely due to a random error in measurement due to a faulty electrometer or pail. The electrometer may have not been sensitive enough to pick up all the charged particles when the wands were not out the pail we should have repeated this so we can get accurate readings. Voltage/ Distance 60 cm (Second Sphere Grounded) 30 cm (Charge Sphere) 2 cm (Second Sphere) Front (near) - 0.6 Volts 0.6 Volts 0.6 Volts Back (far) - 0.6 Volts 0.6 Volts -0.6 Volts Left - 0.6 Volts 0.6 Volts -1.2 Volts Right - 0.6 Volts 0.6 Volts - 0.3 Volts In part two of this experiment, we set up two conductive spheres 30 cm apart from each other. We applied 2000 volts to one of the spheres. We grounded the aluminum wand placed it tangent to the charged sphere to collect particles. The wand was then placed into the pail without contact and record a positive charge of 0.6 Volts. This lets us know that the electric field has a radius of at least 30 cm. We repeated these steps with 2 cm distance
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