dent-b-chooses-normal-hat-z-the-field-is-vec-eexhat-z-which-statement-is-correct

Question

Two students compute the flux through the same flat panel in the xyxy-plane. Student A chooses normal +z^+\hat{z}; Student B chooses normal −z^-\hat{z}. The field is E⃗=E(x)z^\vec{E} = E(x)\hat{z}. Select the correct statement regarding their computed flux values.

Accepted Answer

Their flux values have equal magnitude and opposite sign

Answer

Only Student A can obtain a valid flux because +z^+\hat z is the standard normal

Answer

Their flux values are identical because the surface is the same physical object

Answer

Both must obtain zero because the normal direction is arbitrary

Two students compute the flux through the same flat panel in the xyxy-plane. Student A chooses normal +z^+\(\hat{z}\); Student B chooses normal −z^-\(\hat{z}\). The field is E⃗=E(x)z^\(\vec{E}\) = E(x)\(\hat{z}\). Select the correct statement regarding their computed flux values.

Two students compute the flux through the same flat panel in the $x y$ -plane. Student A chooses normal $+ \hat{z}$ ; Student B chooses normal $- \hat{z}$ . The field is $\vec{E} = E (x) \hat{z}$ . Select the correct statement regarding their computed flux values.