The concentric rings 1 and 2 carrying equal and uniform charge densiti – McqOptions

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1.	The concentric rings 1 and 2 carrying equal and uniform charge densities revolve at the same angular speed ω about their common axis passing through centre of ring as shown in fig. The ratio of flux densities due to the two rings at centre of ring will be
A.	2 : 1
B.	1 : 4
C.	1 : 2
D.	1 : 1
Answer» E.

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