Current Electricity and Electrical InstrumentHard
Question
For two wires A and B of same material and of same mass, the radius of A is double that of B. If the resistance of wire A is 34 Ω then that of B will be :-
Options
A.544 Ω
B.272 Ω
C.68 Ω
D.17 Ω
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
An unknown resistance R1 is connected in series with a resistance of 10 Ω. This combination is connected to one gap...In the circuit shown the cells A and B have negligible resistances. For VA = 12V, R1 = 500 Ω and R =100 Ω the ...The radius of the circular loop is ′a′. Magnetic field is increasing at the constant rate α Magnetic fi...A galvanometer has resistance 36Ω. If a shunt of 4Ω is added with this, then fraction of current that passes t...As shown in the figure, P and Q are two coaxil conducting loops separated by some distance. When the switch S is closed,...