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An electron moving with a velocity, v =(4.0 i+ 3.0 j+ 2.0k) x 10^6m/s enters a region where there is a uniform electric field and a uniform magnetic field. The magnetic field is given by B =(1.0 i − 2.0 j + 4.0k) x 10^−2T. If the electron travels through a region without being deflected, what is the electric field?

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