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Textbook Expert
Textbook ExpertVerified Tutor
16 Nov 2021

Given information

It is given that the external force  

The resistance of rod    

The length of rail   

The speed of rail  

 

Step-by-step explanation

Step 1.

The required external force is exerted on the rod to move it with constant speed.

 

Here, is the magnetic field, and is resistance

 

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