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6.What should be the resistance R1,R2,R3 of the rheostat sections for the current through the ammeter A of resistance of 30 ohm to increase by one ampere as the rheostat arm is moved from Shud 1to shud 2 to shud 3 and shud 4. The circuit is connected to a source of emf 120V and internal resistance is zero ohm. Find value of R1,R2,R3.

Answer» 6.What should be the resistance R1,R2,R3 of the rheostat sections for the current through the ammeter A of resistance of 30 ohm to increase by one ampere as the rheostat arm is moved from Shud 1to shud 2 to shud 3 and shud 4. The circuit is connected to a source of emf 120V and internal resistance is zero ohm. Find value of R1,R2,R3.


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