PHY222 Name: Mapping Electric Fields Lab Quiz k=8.99 x 10⁹ m² gelectron=-1.60 x 10-¹9 C ME; = ME 25 Points Melectron = 9

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Phy222 Name Mapping Electric Fields Lab Quiz K 8 99 X 10 M Gelectron 1 60 X 10 9 C Me Me 25 Points Melectron 9 1 (52.62 KiB) Viewed 23 times

PHY222 Name: Mapping Electric Fields Lab Quiz k=8.99 x 10⁹ m² gelectron=-1.60 x 10-¹9 C ME; = ME 25 Points Melectron = 9.11 x 10-³1 kg KE=¹½ mv² V= H=10 AV=-Ed c² AV= U= We =-AU₂ kq192 Remember: In addition to showing all work, your answers must INCLUDE APPROPRIATE UNITS!! 1. The figure below shows two metal shapes that are immersed in the rectangular, shallow tub of water (just like in the lab video). A DC power supply is used to create a potential difference of 15V between the two shapes, with the V-shape attached to the red lead from the power supply and the circle shape attached to the black lead. Between the two shapes, sketch and label dotted lines that represent 2V, 4V, 7V, 11V and 13V equipotential lines, and then sketch in at least 5 solid lines that represent electric field lines. (8 points) 2. The lab was conducted using regular tap water. Could DI water (de-ionized water) be used instead? Why or why not? (3 points) 3. How much work is done by an FE force if a charge of 75.0 µC moves 3.50 m from a surface of 25.0 V to a surface of 16.00 V? (3 points) 4. Electrons are accelerated through a potential difference of 3.75 x 104 V in an old TV set. What is the velocity of an electron just before it slams into the phosphor-coated screen, assuming it started from rest, and there is no air resistance? (3 points) 5. Two point particles are separated by a distance of 6.60m. One of the point particles has a charge of +45.0μC and the other point particle has a charge of -85.0µC. a) What is the electrical potential energy associated with the two charges? (3 points) b) If the +45.0μC charge was located at x-0 and the -85.0µC charge was located at x-6.60m, at what TWO locations on the x axis would the total electrical potential be equal to zero? Note that + ∞o do NOT count as either of the two positions I'm looking for!! (6 points)