A metal rod of resistance $$20$$ Ω is fixed along a diameter of a conducting ring of radius $$0.1m$$ and lies on $$x-y$$ plane. There is a magnetic field B→$$=(50T)k^$$. The ring rotates with an angular velocity ω $$=$$ $$20$$ $$rad/$$$$sec$$ about its axis. An external resistance of $$10$$Ω is connected across the center of the ring and rim. The current through external resistance is

Question

A metal rod of resistance $$20$$ Ω is fixed along a diameter of a conducting ring of radius $$0.1m$$ and lies on $$x-y$$ plane. There is a magnetic field B→$$=(50T)k^$$. The ring rotates with an angular velocity ω $$=$$ $$20$$ $$rad/$$$$sec$$ about its axis. An external resistance of $$10$$Ω is connected across the center of the ring and rim. The current through external resistance is

Infinity Learn · Accepted Answer

ε$$=B$$ω$$r22=5$$ Volt. Now current $$I=$$ε$$R1+R2=13A$$

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