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Explain why are there gaps between the r...

Explain why are there gaps between the rails? Explain what will happen if there is no gap

Text Solution

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`F=BIl=B.(e)/(R).l=0.5xx(9xx10^(-3))/(9xx10^(-3))xx15xx10^(-2)`
`=7.5xx10^(-2)N`
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  16. A metal rod PQ is resting on the rails A'B' and positioned between the...

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