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Question

The force exerted on a current-carrying wire placed in a magnetic field is zero when the angle between the wire and the direction of magnetic field is :

(a) 45o (a) 60o (a) 90o (d) 180o

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Solution

(d) 180o

The force experienced by a current carrying conductor in a magnetic field = ilBsinA

where

i is the intensity of current current carried by the conductor
l is the length of the conductor
b is the strength of the magnetic field in which the conductor is placed
and

A is the angle between the conductor and direction of magnetic field

as maximum value of sinA is 0 and this happens when the angle is 180 degrees


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Force on a Current Carrying Conductor in a Magnetic Field
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