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An electron is moving with a speed of 10,000 km/sec parallel to an electric field of magnitude 1,920 V/m. Estimate the magnitude of the force acting on the electron in N. The charge of the electron: 1.6 10'19 C. The numerical answer has to be within 0.5% of the central value. To use scientific notation for the small numbers, note that the charge of the electron is 1.6E-19 in units of C Number Consider a parallel plate capacitor with (1:12 mm distance between the plates. Air is between the plates. What potential difference can be applied across the plates without creating a spark in units of V? The disruptive electric field strength of air is 3x106 Wm. Number The comparison between your input and the answer is done to 0.1 % accuracy. A constant Electric field is in the x direction. A charge of 4 C is moved in the xdirection to increase the potential by 135 V. What energy was required to do this? Number Units The answer should be accurate to 1 %. Consider two electrons separated by a distance of 0.25 pm. Estimate the magnitude of the force acting on the electrons. The charge of the electron: 1.6 1019 C. Give your answer with two significant figures. (Scientific notation are accepted: for instance 0.1 = 1E-1) Number Units