A point charge is held stationary at the origin A second point charge is moved

A point charge is held stationary at the origin a

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A point charge is held stationary at the origin. A second point charge is moved from the point x = 0.20 m, y = 0 to the point x = 0.3 m, y = 0.35 m. How much work is done by the electric force on ? Solution
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Problem 30. A parallel-plate air capacitor of capacitance of 100 pF has a charge of magnitude 0.1 µC on each plate. The plates are 0.5 mm apart. (a) What is the potential difference between the plates? (b) What is the area of each plate? (c) What is the electric-field magnitude between the plates? (d) What is the surface charge density on each plate? Solution Problem 34. A particle of charge Q and mass m is accelerated from rest through a potential difference V, attaining a kinetic energy K . What is the kinetic energy of a particle of charge 2Q and mass m/2 that is accelerated from rest through the same potential difference? Solution Problem 35. Initially, sphere A has a charge of -50e and a sphere B has a charge of +20e . The spheres are made of conducting material and are identical in size. If the spheres then touch, what is the resulting charge on sphere A ? Solution Problem 37. A 240 Volts circuit used energy when left running for 30 minutes. How much electric charge (in Coulombs) flowed in the 30 minutes? Solution Problem 57. How much work is done in moving a charge of 2 coulombs from a point at 118 volts to a point at 128 volts? Solution
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Problem 64. How much energy is given to a charge of 20 nC passing through a 6 V battery?
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