The conducting rod a b shown in (Figure 1) makes frictionless contact with metal

Question

The conducting rod ab shown in (Figure 1) makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.800 T , perpendicular to the plane of the figure.

Problem 21.24 Part A The conducting rod ab shown in (Fiqure 1) makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.800 T , perpendicular to the plane of the figure Find the magnitude of the emf induced in the rod when it is moving toward the right with a speed 8.20 m/s . Express your answer in volts to three significant figures Submit My Answers Give Up Part B In what direction does the current flow in the rod? OThe current in the rod is from a to b O The current in the rod is zero O The current in the rod is from 6 to a Submit My Answers Give Up Part C If the resistance of the circuit abcd is a constant 1.50 , find the direction of the force required to keep the rod moving to the right with a constant speed of 8.20 m/s. O The force is directed to the left. O No force is needed O The force is directed to the right. Submit My Answers Give Up Part D Find the magnitude of the force mentioned in Part C Express your answer in newtons to three significant figures. ? Figure 1 of 1 Submit My Answers Give Up 50.0 cm

Explanation / Answer

part a )

e = vBL

e = 8.2 * 0.800 * 0.5 = 3.28 V

part b )

current will be from b to a

part c )

force is directed to the right

part d )

I = e/R = 2.1867 A

F = ILB

F = 0.87467 N

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