1.

A flat coil of area A and n turns is placed at the centre of a ring fo radius `r(r^(2)gtgtA)` and resistance R. The coil and the ring are coplaner. When the current in the coil increases from zero to `i` , the total charge circulating in the ring isA. `(mu_(0)nAi)/(2rR)`B. `(mu_(0)nAi)/(r^(2)R)`C. `(mu_(0)nAi)/(2piR)`D. `(mu_(0)n^(2)i)/(4pirR)`

Answer» Correct Answer - A


Discussion

No Comment Found

Related InterviewSolutions