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 =
⇒      = = 4                           Ans.

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