1.

In the given circuit, no current is passing through the galvanometer. If the cross sectional diameter of the wire `AB` is doubled, then for null point of galvanometer, the value of `AC` would be: A. `2X`B. `X`C. `(X)/(2)`D. `3X`

Answer» Correct Answer - B
`L.C=(1)/(50)mm=0.02mm`
`M.S.R=3mm`
`C.S.R=31xx0.02mm=0.62 mm`
Zero eror correction` = -0.12mm`
So diameter `=3.50mm`


Discussion

No Comment Found

Related InterviewSolutions