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Electrostatics

A point charge q= -8 nC is located at origin. Find the electric field vector at the point x=1.2m and y= -1.6m.

the self

7 Years agoGrade

1 Answer

Khimraj

7 Years ago

r = 1.2 $\hat{i}$ – 1.6 $\hat{j}$

$\hat{r}$ = r/|r| = (1.2 $\hat{i}$ – 1.6 $\hat{j}$ )/2 = 0.6 $\hat{i}$ – 0.8 $\hat{j}$

|r| = 2m

E = KQ $\hat{r}$ /r²

E = 9*10⁹*(-8*10^-9)*(0.6 $\hat{i}$ – 0.8 $\hat{j}$ )/4

E = 18( - 0.6 $\hat{i}$ + 0.8 $\hat{j}$ ) N/C
Hope it clears.

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