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Q8: The following illustration is a conceptual diagram of magnetic flux density B using Hall Effect. When current I flows through a conductive plate with width and thickness of w and d respectively, charges moving at a constant speed move to the edge of the plate under the influence of B. By measuring the voltage Vh, what is the value of B (where RH = 1/(nq), n is the number of electrons per unit volume, and q is the charge of electrons). (1) B = V_H d / (I R_H) (2) B = V_H d / (I R_H w) (3) B = V_H w / (I R_H d) (4) B = V_H / (I R_H d) B w + V_H - d I

          Q8: The following illustration is a conceptual diagram of magnetic flux density B using Hall Effect. When current I flows through a conductive plate with width and thickness of w and d respectively, charges moving at a constant speed move to the edge of the plate under the influence of B. By measuring the voltage Vh, what is the value of B (where RH = 1/(nq), n is the number of electrons per unit volume, and q is the charge of electrons).

(1) B = V_H d / (I R_H)
(2) B = V_H d / (I R_H w)
(3) B = V_H w / (I R_H d)
(4) B = V_H / (I R_H d)

B
w
+
V_H
-
d
I

Q8: The following illustration is a conceptual diagram of magnetic flux density B using Hall Effect. When current I flows through a conductive plate with width and thickness of w and d respectively, charges moving at a constant speed move to the edge of the plate under the influence of B. By measuring the voltage Vh, what is the value of B (where RH = 1/(nq), n is the number of electrons per unit volume, and q is the charge of electrons).

(1) B = VH d / (I RH)
(2) B = VH d / (I RH w)
(3) B = VH w / (I RH d)
(4) B = VH / (I RH d)

B
w
+
VH
-
d
I

Added by Lisa R.

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