A current 
A flows in a ring of radius 
cm made of a very thin wire. The tensile strength of the wire is equal to 
N. The ring is placed in a magnetic field, which is perpendicular to the plane of the ring so that the forces tend to break the ring. Find 
(in T) at which the ring is broken
A current A flows in a ring of radius cm made of a very thin wire. The tensile strength of the wire is equal to N. The ring is placed in a magnetic field, which is perpendicular to the plane of the ring so that the forces tend to break the ring. Find (in T) at which the ring is broken
Question ID - 153950 | SaraNextGen Top Answer
A current A flows in a ring of radius cm made of a very thin wire. The tensile strength of the wire is equal to N. The ring is placed in a magnetic field, which is perpendicular to the plane of the ring so that the forces tend to break the ring. Find (in T) at which the ring is broken
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A current |
1 Answer
127 votes
Answer Key / Explanation : (1) -
(1)
For the equilibrium of a small part of semicircular arc subtending angle of 
at the centre,
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or, 
T
127 votes
Answer Link
127