A galvanometer of resistance `30Omega` is connected to a battery of emf 2 V with `1970Omega` resistance in series. A full scale deflection of 20 divis
A galvanometer of resistance `30Omega` is connected to a battery of emf 2 V with `1970Omega` resistance in series. A full scale deflection of 20 divisions is obtained in the galvanometer. To reduce the deflection to 10 divisions, the resistance in series required is
A. 4030 `omega`
B. `4000 omega`
C. `3970 omega`
D. `2000 omega`
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