A 0.253 m -long bar moves on parallel rails that are connected through a 6.21 re

Question

A 0.253 m -long bar moves on parallel rails that are connected through a 6.21 resistor, as shown in the following figure (Figure 1) , so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform magnetic field 1.34 Tthat is directed into the plane of the figure.

Part A

At an instant when the induced current in the circuit is counterclockwise and equal to 1.74 A , what is the magnitude of the velocity of the bar?

Express your answer with the appropriate units.

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Part B

What is the direction of the velocity of the bar?

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Figure 1 of 1

A 0.253 m -long bar moves on parallel rails that are connected through a 6.21 resistor, as shown in the following figure (Figure 1) , so the apparatus makes a complete circuit. You can ignore the resistance of the bar and rails. The circuit is in a uniform magnetic field 1.34 Tthat is directed into the plane of the figure.

Part A

At an instant when the induced current in the circuit is counterclockwise and equal to 1.74 A , what is the magnitude of the velocity of the bar?

Express your answer with the appropriate units.

v=

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Part B

What is the direction of the velocity of the bar?

What is the direction of the velocity of the bar? leftward rightward

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Figure 1 of 1

Explanation / Answer

(A) e = B L v

I R = B L v

1.74 x 6.21 = 1.23 x 0.253 x v

v = 34.7 m/s

(b) rightwards

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