Current Electricity and Electrical InstrumentHard
Question
Potentiometer wire length is 10 m, having a total resistance of 10Ω. If a battery of emf 2 volt (negligible internal resistance) and a rheostat is connected to it then potential gradient is 20mV/m find the resistance applied through rheostat : -
Options
A.90 Ω
B.990 Ω
C.40 Ω
D.190 Ω
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
Electroplating is not provided to be used for...The reading of Ammeter in ampere for following circuit is :-...Suppose a long solenoid of 100 cm length, radius 2 cm having 500 turns per unit length, carries a current $I = 10sin(\om...Find the potential difference between X and Y in volt is : -...In producing chlorine by electrolysis 100 kW power at 125 V is being consumed. How much chlorine per minute is liberated...