Q12) A 0.360-m-long metal bar is pulled to the left by an applied force F. The bar rides on parallel metal rails connected through a 45.0 -? resistor, as shown in the Figure, so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform 0.650 T magnetic field that is directed out of the plane of the figure. At the instant when the bar is moving to the left at 5.90 m/s a) is the induced current in the circuit clockwise of counterclockwise? b) what is the rate at which the applied force is doing work on the bar? a) counterclockwise b) 0.0424 W
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According to Lenz's law, the induced current will always flow in a direction to oppose the change causing it. In this case, the movement of the bar to the left is reducing the area of the loop, which would decrease the magnetic flux through the loop. To oppose Show moreā¦
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A 0.360-m-long metal bar is pulled to the left by an applied force $F$. The bar rides on parallel metal rails connected through a 45.0-$\Omega$ resistor, as shown in $\textbf{Fig. E29.31}$, so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform 0.650-T magnetic field that is directed out of the plane of the figure. At the instant when the bar is moving to the left at 5.90 m/s, (a) is the induced current in the circuit clockwise or counterclockwise and (b) what is the rate at which the applied force is doing work on the bar?
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