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  • A circular loop of radius R is moved with a velocity v as shown in the diagram. The force needed to maintain its velocity constant is <img alt="" src="https://cdn.entrance360.com/media/up

A circular loop of radius R is moved with a velocity v as shown in the diagram. The force needed to maintain its velocity constant is

Option: 1

\frac{\mu _{0}IvR}{2\pi a}


Option: 2

\frac{\mu _{0}IvR}{2\pi \left ( a+R \right )}


Option: 3

\frac{\mu _{0}IvR}{2\pi}In\left (\frac{R+a}{R} \right ]

 


Option: 4

Zero


Answers (1)

best_answer

Answer (4)
As there is no current in circular loop, So, no force is required to move it.

Posted by

Gautam harsolia

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