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  4. A rod of length 2 m slides with a speed of 5 ms-1 on a rectangular conducting frame as shown in figure. There exists a uniform magnetic filed of 0.04 T perpendicular to the plane of the figure. If the resistance of the rod is 3 Ω. The current through the rod is

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Q. A rod of length $2 \,m$ slides with a speed of $5 \,ms^{-1}$ on a rectangular conducting frame as shown in figure. There exists a uniform magnetic filed of $0.04 \,T$ perpendicular to the plane of the figure. If the resistance of the rod is $3 \Omega$. The current through the rod isPhysics Question Image

KCETKCET 2020Electromagnetic Induction

Solution:

We know that the current,
$i = BIv / R =(0.04 \times 2 \times 5) / 3=133\, mA$