Current Electricity and Electrical InstrumentHard
Question
All the edges of a block in cuboidal shape with parallel faces are unequal. Its longest edge is twice its shortest edge. The ratio of the maximum to minimum resistance between parallel faces is:


Options
A.2
B.4
C.8
D.indeterminate unless the length of the third edge is specified.
Solution

a > b > c
and a = 2c
Rmax =
Rmin =
⇒
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A piece of copper and another of germanium are cooled from room temperature to 80 K. The resistance of :...The resistance of a galvanometer is 50 Ω and the current required to give full scale deflection is 100μA. In o...100 cells, each of e.m.f. 5 V and internal resitance 1 Ω, are to be arranged so as to produce maximum current in a ...In the given figure, the equivalent resistance between two points A and B will be :...Which one of the following is not a measurable quantity?...