AB and CD are smooth parallel rails seperated by l and inclined at angle - with the horizontal- If B is normal to the plane of the rails then force on conductor EF placed on the rails is

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Standard XII

Physics

Law of Gravitation

AB and CD are...

Question

AB and CD are smooth parallel rails seperated by l and inclined at angle $θ$ with the horizontal. If B is normal to the plane of the rails then force on conductor EF placed on the rails is

B i l = m g t a n θ

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B i l = m g s i n θ

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B i l = m g c o s θ

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equilibrium cannot be reached

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Solution

The correct option is B $B i l = m g s i n θ$
as seen from the image, in the direction of magnetic field
$F_{G r a v i t a t i o n a l} = F_{M a g n e t i c} m g s i n θ = i \to l \times \to B m g s i n θ = i l B$

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AB and CD are smooth parallel rails seperated by l and inclined at angle θ with the horizontal. If B is normal to the plane of the rails then force on conductor EF placed on the rails is

The correct option is B Bil=mgsinθas seen from the image, in the direction of magnetic fieldFGravitational=FMagneticmgsinθ=i→l×→Bmgsinθ=ilB

AB and CD are smooth parallel rails seperated by l and inclined at angle $θ$ with the horizontal. If B is normal to the plane of the rails then force on conductor EF placed on the rails is

The correct option is B $B i l = m g s i n θ$
as seen from the image, in the direction of magnetic field
$F_{G r a v i t a t i o n a l} = F_{M a g n e t i c} m g s i n θ = i \to l \times \to B m g s i n θ = i l B$