x \\D 48 F17 Sample EE 8F17 Sample EX2 × My Blackboard Co x NG Three point Charo

Question

x D 48 F17 Sample EE 8F17 Sample EX2 × My Blackboard Co x NG Three point Charo earn.fresnostate.edu/bbcswebdav/pid-1892134-dt-content-rid-14110457_1/courses/PHYS4B-03-75872-2177/ D. The electric field at the center of square II is zero. E. The electric field at the midpoint of the upper edges (the lines marked I and II) of the squares is zero in both cases. 5. In the figure, Q-5.0pC, and d-0.6 m. The magnitude of the force on the point charge -0 is: A. 500 N B. 0.06 N C 1.5N D. 10.0 N +20 O N 6. The electric field in a region of space is given by E-bx'i, where b9& Vm Find the petential differense between two points with x-coordinates.x- I mandx-3 m A. -21 kV B -78 kV C. -372 kV D -645 &V;

Explanation / Answer

5. The magnitude of electric force

sqrt(k^2F1^2+k^2F1^2+)

k=9e-10

F1= 2Q^2/d^2, F2 = Q^2/2d^2

F1=1.39E-10 F2 = 3.47E-11

S0, net force = 1.5N

B) E= bx^2 = -dV/dX

V = -(bx^3/3) + constant

Potential difference between x = 1m and x= 3 m

= -81+3 = -78 kV

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