Current Electricity and Electrical InstrumentHard
Question
Two similar cells are connected first in series and then in parallel, the ratio of balancing length on the potentiometer wire will be :-
Options
A.1 : 2
B.2 : 1
C.1 : 4
D.4 : 1
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
The resistance of a coil in a platinum resistance thermometer at 0oC is 5 ohm and at 100oC it is 5.75 ohm. Its resistanc...A 10V battery with internal resistance 1Ω and a 15V battery with internal resistance 0.6Ω are connected in par...Two concentric coplaner circular loop have radius r1 and r2 respectively (r2 > r1). If a current of I1 flows through ...In an ammeter 0.2% of main current passes through the galvanometer. If resistance of galvanometer is G, the resistance o...The specific resistance of a metal wire is 64 × 10−6 Ω × cm., the length is 198 cm and the resistan...