A uniform electric field E = - 1000 N/C i is shown in the figure below. The valu

Question

A uniform electric field E = - 1000 N/C i is shown in the figure below. The value for L = 1.0 cm. What is the difference in electric potential, Delta V = V_B - V_A between points A and B? What is the difference in electric potential, Delta V = V_C - V_B, between points C and B? What is the difference in electric potential, Delta V = V_C - V_A, between points C and A? While we only explored differences in voltage above, also contemplate: What voltage value(s) could you assign to point A? Does convention help narrow it down?

Explanation / Answer

Here ,

Electric field ,E = -1000 N/C

L = 1 cm = 0.01 m

a)

VB - VA = E * 3L * cos(90)

VB - VA = 0 V

b) for Vc - VB

Vc - VB = -1000 * (-4 L)

Vc - VB = 1000 * 0.04 V

Vc - VB = 40 V

c)

as VB = VA

VC - VA = VC - VB

VC - VA = 40 V

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we can assign any value of potential to point A

no covention does not help to norrow it down

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