A one metre long wire is lying at right angles to the magnetic field. A force of $1\, kg$ wt. is acting on it in a magnetic field of $0.98\, Tesla$. The current flowing in it will be....$A$
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(b) $F = Bil \Rightarrow 1 \times 9.8 = 0.98 \times i \times 1$$ \Rightarrow i = 10\,A$
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