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Blank Unit Objectives - and B is 5.0 mm. 2) A charged...

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Name________________________________ By the end of this unit you should be able to Define the following terms: Conduction: Induction: Elementary Charge: Insulators vs. Conductors: Coulombs Law: Principle of Superposition: Electric Field: Electric Potential/Potential Differnce: Equipotential Surface: Capacitance: Remember, manipulate and use the following equations:
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Solve the following key problems 1) A positively charged piece of foam is suspended between two charged parallel plates as shown. The mass of the foam is 2.2 x 10 -3 kg. a) If the charge on the foam is +2μC determine the strength of the electric field that is needed to suspend the foam. b) If the separation between the plates is 9.0 mm, determine the difference in electric potential between the plates. c) How much work is required to move the charge from A to C at a constant rate (points A and C are equidistant from the plate) d) How much work is required to move the charge from A to B if the distance between A
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Unformatted text preview: and B is 5.0 mm. 2) A charged conducting sphere of radius 4.0 cm is charged -3.5C as shown. a) What is the electric potential at point A which is 1.5 cm from the center of the sphere? b) What is the electric potential at point B which is 8.0 cm from the surface of the sphere? c) A small charge of mass 2.6 x 10-3 kg is brought from infinity to point B. If the charge of the small sphere is +1.2C, how much work is done by the field? d) If the charge is released from rest at point B, how fast is it moving when it reaches the surface of the larger sphere (assume the larger sphere does not move) 3) Three point charges are placed as shown in the diagram below. The charges are as follows: 1= +2C, 2= -3C, 3= 4.3C a) Find the net electric field at point A. b) Find the net electric potential at point A. c) If another charge of -3.5C is brought to point A, what is the net electric force acting on the new charge. Answers:...
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Blank Unit Objectives - and B is 5.0 mm. 2) A charged...

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