Current Electricity and Electrical InstrumentHard
Question
Two resistance R1 and R2 are made of different materials. The temperature coefficient of the material of R1 is a and of the material of R2 is −b. The resistance of the series combination of R1 and R2 will not change with temp., then ratio of resistance of two wire at 0oC will be :
Options
A.
B.
C.
D.
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A wire is in the form of a tetrahedron. The resistance of each edge is r. The equivalent resistances between corners 1&#...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 ...Find potential of J with : - respect to G -...Kirchhoff ′s first and second law shows the conservation of : -...A resistance of 4 Ω and a wire of length 5 m and resistance 5Ω are joined in series and connected to a cell of...