Current Electricity and Electrical InstrumentHard
Question
A metal rod of resistance 20Ω is fixed along a diameter of a conducting ring of radius 0.1 m and lies on x-y plane. There is a magnetic field 
. The ring rotates with an angular velocity π = 20 rad/s about its axis. An external resistance of 10π is connected across the centre of the ring and rim. The current through external resistance is :-
. The ring rotates with an angular velocity π = 20 rad/s about its axis. An external resistance of 10π is connected across the centre of the ring and rim. The current through external resistance is :-Options
A.1/4A
B.1/2A
C.1/3A
D.Zero
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