Last Updated On [03-11-2023]
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 :-
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 |
(1)
For the equilibrium of a small part of semicircular arc subtending angle of 
at the centre,
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or, 
T
Next Question :
Two circular coils 
and
, having equal number of turns and carrying currents in the same sense, subtend same solid angle at point
. If the smaller coil 
is midway between 
and 
and if we represent the magnetic induction due to bigger coil 
at 
as 
and that due to smaller coil 
at 
as 
, then find the ratio 
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