A semi-infinite line charge of uniform linear charge density λ lies along the negative x-axis and ends at the origin. Point P is at (0,a), a>0.The electric field at P makes which angle with the +x direction?
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Question

A semi-infinite line charge of uniform linear charge density λ lies along the negative x-axis and ends at the origin. Point P is at (0,a), a>0.The electric field at P makes which angle with the +x direction?

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G1 Physics · Accepted Answer

For this geometry, Eₓ = kλ/a and Eᵧ = kλ/a. Therefore, tanφ = Eᵧ/Eₓ = 1, so φ = 45°.

A semi-infinite line charge of uniform linear charge density λ lies along the negative x-axis and ends at the origin. Point P is at (0,a), a&gt;0.The electric field at P makes which angle with the +x direction?

A semi-infinite line charge of uniform linear charge density λ lies along the negative x-axis and ends at the origin. Point P is at (0,a), a>0.The electric field at P makes which angle with the +x direction?