ElectroMagnetic InductionHard
Question
Two geometrically identical cycle wheels have different number of spokes connected from centre to rim. One is having 20 spokes and other having only 10 (the rim and the spokes are resistanceless). One resistance of value R is connected between centre and rim. Direction of uniform magnetic field is perpendicular to the plane of the wheel 
. The current in R will be :
. The current in R will be : Options
A.double in first wheel than in the second wheel
B.four times in first wheel than in the second wheel
C.will be double in second wheel than that of the first wheel
D.will be equal in both these wheels.
Solution
Since all the wires are connected between rim and axle so they will generate induced emf in parallel, hence it is same for any number of spokes.
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