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A horizontal rod 0.2 m long is mounted o...

A horizontal rod `0.2 m` long is mounted on a balnce and carries a current. At the location of the rod a uniform horizontal magnetic field has magnitude `0.067 T` and direction perpendicular to the rod. The magnetic force on the rod is measured by the balance and is found to be `0.13N`. What is the current?

Text Solution

Verified by Experts

`F=ilB sin90^@`
`:. =F/(lB)=0.13/(0.2xx0.067)`
`=9.7A`
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