1.

Write the dimensional formula for resistivity.

Answer»

`[ML^(2)T^(-2)A^(-2)]`
`[ML^(3)T^(-3)A^(-2)]`
`[ML^(-2)T^(-2)A^(2)]`
`[ML^(2)T^(-2)A^(-3)]`

SOLUTION :`Resistivity=("Resistancexxarea")/("length")`
`=(ML^(2)T^(-3)A^(-2)xxL^(2))/(L)=[ML^(3)T^(-3)A^(-2)]`
which is CHOICE `(B)`.


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