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nezsmith

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[moderators note: moved from technical forum, so no template]

The Question:

What is the electric field at point 1 in the figure? Give your answer in component form.(Figure 1)Assume that a = 2.5 cm ,b = 0.70 cm , and q = 4.8 nC .

The formulas:

Electric Field at the point = k|q|/r^2 = E1

E1 as components = E1cos(theta)i + E1sin(theta)j

Theta = arctan(0.025/0.007)= 74 degrees

r1=r3= sqrt(0.025^2+0.007^2) = 0.026 m

The attempt:

8.99e^9|4.8e^-9|/(0.026^2) = 63 834 N/C

E(vector) = 63834cos74i + 63834sin74j

E1x = 1.8 x 10^4 and E1y = 6.1 x 10^4 N/C

Can anyone confirm or deny this answer?

**Summary:**I can't tell where the mistake in my process is. The computer keeps telling me I am wrong.The Question:

What is the electric field at point 1 in the figure? Give your answer in component form.(Figure 1)Assume that a = 2.5 cm ,b = 0.70 cm , and q = 4.8 nC .

The formulas:

Electric Field at the point = k|q|/r^2 = E1

E1 as components = E1cos(theta)i + E1sin(theta)j

Theta = arctan(0.025/0.007)= 74 degrees

r1=r3= sqrt(0.025^2+0.007^2) = 0.026 m

The attempt:

8.99e^9|4.8e^-9|/(0.026^2) = 63 834 N/C

E(vector) = 63834cos74i + 63834sin74j

E1x = 1.8 x 10^4 and E1y = 6.1 x 10^4 N/C

Can anyone confirm or deny this answer?

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