(8c23p3) A cube with 1.40 m edges is oriented as shown in the figure in a region
ID: 1900516 • Letter: #
Question
(8c23p3) A cube with 1.40 m edges is oriented as shown in the figure in a region of uniform electric field.
Find the electric flux through the right face if the electric field, in newtons per coulomb ( N/C), is given by 4.00i. (N*m(shift-6)2/C)
Find the electric flux through the right face if the electric field, in newtons per coulomb ( N/C), is given by -4.00j.
Find the electric flux through the right face if the electric field, in newtons per coulomb ( N/C), is given by -3.00i + 4.80k.
What is the total flux through the cube for each of these fields?
Explanation / Answer
the right side has an A vector = 1.4^2 j a) so flux= E*A = 4i * 1.4^2 j = 0 since i and j are orthogonal b) flux = E*A = -4j * 1.4^2 j = -4*1.4^2=-7.84 c) flux = E*A (-3 i +4.8 k) * 1.4^2 j = 0 since j is orthogonal to i and k d) since E is constant flux in = flux out so net flux=0 for all three
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