Extra Credit Midterm 2-solutions - Extra Credit Midterm 2...

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Extra Credit Midterm 2 yeazell (58010) 1 This print-out should have 9 questions. Multiple-choice questions may continue on the next column or page – find all choices before answering. 001 10.0points An electric field pointing in the positive x - direction has an x component that varies with position as given by E x = (3000 V / m 4 ) x 3 . Find the potential difference between two points on the x -axis. The initial point is x 1 = 1 m and the final point is x 2 = 6 m. Find the magnetic force when the velocity of the electron is v ˆ k . y z x v electron B y B z B
002 10.0points An electron is projected into a uniform mag- netic field given by vector B = B y ˆ + B z ˆ k . The magnitude of the charge on an electron is e . F = e v B

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