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A multirange voltmeter can be construct...

A multirange voltmeter can be constructed by using a galvanometer circuit as shown in Fig. EP 4.21. We want to construct a voltmeter that can measure 2V, 20V and 200 V using a galvanometer of resistance `10 Omega` and that produces maximum deflection for current of 1 mA. find `R_1`, `R_2` and `R_3` that have to be used.

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MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
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  5. If a wire is stretched to make it 0.1% longer, its resistance of will

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  11. The resistance of a bulb filmanet is 100Omega at a temperature of 100^...

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  13. The resistance of hot tungsten filament is about 10 times the cold res...

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  15. An 220 volt-1000 watt bulb is connected across a 110 volt mains supply...

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  17. If in the circuit, power dissipation is 150 W, then R is

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  18. A wire when connected to 220 V mains supply has power dissipation P1. ...

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  19. The resistance of the series combination of two resistances is S. WHen...

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  20. A 3 V battery with negligible internal resistance is connected in a ci...

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  21. What will be the value of current through 2Omega resistance for the ci...

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