Question

4) A 0.225 m long bar moves on parallel rails that are connected through a 6.25 ? resistor, as shown in the following figure, 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 3.8 T that is directed into the plane of the figure. a) At an instant when the induced current in the circuit is clockwise and equal to 1.92 A , what is the magnitude of the velocity of the bar? b) What is the direction of the velocity of the bar?

          4) A 0.225 m long bar moves on parallel rails that are connected through a 6.25 ? resistor, as shown in the following figure, 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 3.8 T that is directed into the plane of the figure.

a) At an instant when the induced current in the circuit is clockwise and equal to 1.92 A , what is the magnitude of the velocity of the bar?

b) What is the direction of the velocity of the bar?

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4) A 0.225 m long bar moves on parallel rails that are connected through a 6.25 ? resistor, as shown in the following figure, 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 3.8 T that is directed into the plane of the figure.

a) At an instant when the induced current in the circuit is clockwise and equal to 1.92 A , what is the magnitude of the velocity of the bar?

b) What is the direction of the velocity of the bar?

Added by John G.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Sufiyan Alam

04/05/2022

Step 1

In this case, the magnetic flux is changing because the area of the loop formed by the bar and the rails is changing as the bar moves. The emf is also equal to the product of the current and the resistance in the circuit (Ohm's law). Show more…

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4) A 0.225 m long bar moves on parallel rails that are connected through a 6.25 ̐ resistor, as shown in the following figure, 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 3.8 T that is directed into the plane of the figure. a) At an instant when the induced current in the circuit is clockwise and equal to 1.92 A, what is the magnitude of the velocity of the bar? b) What is the direction of the velocity of the bar?

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