A ring of mass m, radius r with charge per unit length lambda. Encloses a magnetic field such that B=-B_(0)hatk, when r le a, B=0 when r gt a when the magnetic field is switched off. The rings starts to rotate due to induced electric field with varying flux. Find angular velocity (in 10^(-2)rad//s) with which ring rotates after the magnetic field has been compeletely turned off. B_(0)=1 Tesla, a=1cm, r=2cm, m=0.5kg, lambda=(4)/(pi)C//m.

A ring of mass m, radius r with charge per unit length lambda. Enclose

1.	A ring of mass m, radius r with charge per unit length lambda. Encloses a magnetic field such that B=-B_(0)hatk, when r le a, B=0 when r gt a when the magnetic field is switched off. The rings starts to rotate due to induced electric field with varying flux. Find angular velocity (in 10^(-2)rad//s) with which ring rotates after the magnetic field has been compeletely turned off. B_(0)=1 Tesla, a=1cm, r=2cm, m=0.5kg, lambda=(4)/(pi)C//m.
Answer» `2` `4` `5` `8` ANSWER :B

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