If the number of turns and radius of cross section of the coil of a tangent galvanometer are doubled, then the reduction factor $K$ will become
If the number of turns and radius of cross section of the coil of a tangent galvanometer are doubled, then the reduction factor $K$ will become
- A
$K$
- B
$2 K$
- C
$4 K$
- D
$\frac{K}{4}$
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