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  4. Consider the given case <img class=img-fluid question-image alt=Question src=https://cdn.tardigrade.in/q/nta/p-m1wkml6jknx0humy.jpg /> Magnetic field of 1 T is applied to this arrangement. If connecting wires and rod have negligible resistance. Then, the current through 5 Ω resistor is ldots ldots mA. .

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Q. Consider the given case
Question
Magnetic field of $1\,T$ is applied to this arrangement. If connecting wires and rod have negligible resistance. Then, the current through $5\,\Omega$ resistor is $\ldots \ldots mA.$ .

NTA AbhyasNTA Abhyas 2022

Solution:

The formula for motional emf is $\epsilon =Blv$
Therefore, the current in the resistor $i=\frac{B l v}{R}=\frac{1 \times 0 . 1 \times 2}{5}=40\,mA$