A wire ab of length 1, mass m and resistance R slides
on a smooth, thick pair of metallic rails joined at the
bottom as shown in figure (38-E16). The plane of the
rails makes an angle with the horizontal. A vertical
magnetic field B exists in the region. If the wire slides
on the rails at a constant speed v, show that
В =
mg R sino
vlcosa
B
Figure 38-E16
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.A wire ab of length l, mass m and resistance R slides on a smooth, thick pair of metallic rails joined at the bottom as shown in figure (38-E16). The plane of the rails makes an angle θ with the horizontal. A vertical magnetic field B exists in the region. If the wire slides on the rails at a constant speed v,
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