The graph in the figure shows the variation of the electric potential V(x) (in arbitrary units) as a function of the position x (also in arbitrary units). Which of the choices below correctly describes the orientation of the x-component of the electric field along the x-axis? V(x) $.5 25 15 0.5 -2 -1.5 -1-0.5 0.5 1 1.5 2 x' O Ex is negative from x = -2 to x = 0, and positive from x =0 to x 2. O none of the given choices O Ex is positive from x = -2 to x = 2. O Ex is negative from x = -2 to x = 2. O Ex is positive from x = -2 to x = 0, and negative from x = 0 to x = 2.

What is the value of the electrostatic potential at a distance of 0.53 Å (Angstroms) from a proton?  (If you'll remember from last week, 0.53 Å is the average distance between the proton and the electron in a hydrogen atom.)     5.12 x 1011 V     4.34 x 10-18 V     27.1 V     8.19 x 10-8 N

In a particular region of space, the electric potential is given by V = -7x²z+5xyz. What is the electric field in the region? Give x, y, and z components of the electric field vector E below. #3 Hint a. E₂ = b. Ey = c. E₂= Question Help: Message instructor Submit Question 80 F3 E D C S4 $ 4 F4 R F % 5 V F5 T G ^ 6 MacBook Air B F6 Y H & 1 7 F7 * CO 8 DII F8 UI U 1 J N M ( 9 K F9 0 I ) 0 L F10 P V ( F11 { ۔ [

1.25 points An electric field in a region of space is parallel to the x- axis. The electric potential varies with position as shown in the figure. Find the magnitude of the electric field (in kV/m) at x-2.5 cm. 50 40 30 20 10 x (cm) -10 -20 -30 -40 -50 ३ दि २०१३३३६