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Sahay Sir > Question Answers > MTG NEET Physics > Part 2 > Chapter 4 - Magnetic Effect of Current and Moving Charges > A galvanometer of resistance 50Ω is connected to a battery of 3V along with a resistance of 2950Ω in series shows full-scale deflection of 30 divisions. The additional series resistance required to reduce the deflection to 20 divisions is

A galvanometer of resistance 50Ω is connected to a battery of 3V along with a resistance of 2950Ω in series shows full-scale deflection of 30 divisions. The additional series resistance required to reduce the deflection to 20 divisions is

A magnetic field due to a long straight wire carrying a current I is proportional to.