IND}}=Bv\ell =0.3\times {{10}^{-4}}\times 5\times 20\] \[=3\times {{10}^{-3}}\,V=3m\,V\].

"> IND}}=Bv\ell =0.3\times {{10}^{-4}}\times 5\times 20\] \[=3\times {{10}^{-3}}\,V=3m\,V\].

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A horizontal straight wire 20m long extending from east to west falling with a speed of 5.0 m/s, at right angles to the horizontal component of the earth's magnetic field \[0.30\times {{10}^{-4}}\,Wb/{{m}^{2}}\]. The instantaneous value of the e.m.f. induced in the wire will be

Joint Entrance Exam - Main (JEE Main) Physics in Joint Entrance Exam - Main (JEE Main) 1 year ago

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[a] \[{{\varepsilon }_{IND}}=Bv\ell =0.3\times {{10}^{-4}}\times 5\times 20\] \[=3\times {{10}^{-3}}\,V=3m\,V\].

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