Question

3. The dimension formula for specific
resistance in terms of [M], [L] and [Q],
where [Q] is dimension for charge is (unit
for resistance is R = kgm/As?):

1) [M][L][T]^-1[Q] ^-1

2) [M][L]^3[T]^3[Q]^-1

3) [M][L]^2[T]^-2[Q]^-1

4) [M][L]^3[T]^-1^[Q]^-2
​

Answer 1

Answer:

[M][L][T]^-1[Q]^-1

Explanation:

Since, R=ρlA , where ρ is specific resistance.

∴ [ρ]=[RAl],R=Vi,V=WQ

[ρ]=[ML3T−1θ−2]