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Sahay Sir > Question Answers > NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions > Physics > Chapter 22 - Current Electricity > The resistance of an ammeter is 13 Ω and its scale is graduated fro a current upto 100 A. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value of shunt resistance is

The resistance of an ammeter is 13 Ω and its scale is graduated fro a current upto 100 A. After an additional shunt has been connected to this ammeter it becomes possible to measure currents upto 750 A by this meter. The value of shunt resistance is

A galvanometer has a coil of resistance 100 Ohms and gives a full-scale deflection for 30 mA current. If it is to work as a voltmeter of 30 V range the resistance required to be added will be