t Motional F in a Conducting Rod In the figure, a conducting rod with length L 2

Question

t Motional F in a Conducting Rod In the figure, a conducting rod with length L 27.0 cm moves in a magnetic field B of magnitude 0.370 T directed into the plane of the figure. The rod moves with speed 5.00 m/s in the direction shown. (Figure 1) Figure 1 L Part C When the charges in the rod are in equilibrium, what is the magnitude E of the electric field within the rod? Express your answer in volts per meter to at least three significant figures. V/m Submit Hints My Answers Give Up Review Part Part D Which point, a or b, is at higher potential? Subm Hints My An Give Up Review Part Correct

Explanation / Answer

(c)

lf the charge on rod is in equilibrium,

then, Fm = Fe

q*v*B = q*E

E = v*B = 5*0.37

E = 1.85 N/C

(d)

The point b is at higher potential.

(e)

Vba = -integrate (E.dL) from a to b

Vba = E*L

Vba = 1.85*0.27 = 0.4995 V

(f)

magnitude of motional emf induced in the rod,

emf = Vba

emf = 0.4995 V

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