Question
$M{L^3}{T^{ - 1}}{Q^{ - 2}}$ is dimension of

Answer

(a) Resistivity $[\rho ] = \frac{{[R]\,.\,[A]}}{{[l]}}$

${\rm{where }} [R] = [M{L^2}{T^{ - 1}}{Q^{ - 2}}]$

$\therefore $ $[\rho ] = [M{L^3}{T^{ - 1}}{Q^{ - 2}}]$

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

A thin flat circular disc of radius $4.5 \mathrm{~cm}$ is placed gently over the surface of water. If surface tension of water is $0.07 \mathrm{~N} \mathrm{~m}^{-1}$, then the excess force required to take it away from the surface is
The primary purpose of using a parabolic mirror in a reflecting telescope is
$Assertion :$ Woolen clothes keep the body warm in winter
$Reason :$ Air is a bad conductor of heat.
The splitting of white light into several colours on passing through a glass prism is due to
The refractive index of the material of a concave lens is $\mu $. It is immersed in a medium of refractive index $\mu _1$ . A parallel beam of light is incident on the lens. The path of the emergent rays when $\mu _1 > \mu $ is
A capacitor with air as the dielectric is charged to a potential of $100\;volts$. If the space between the plates is now filled with a dielectric of dielectric constant $10$, the potential difference between the plates will be......$volts$
At $40\,^oC$, a brass wire of $1\, mm$ is hung from the ceiling. A small mass, $M$ is hung from the free end of the wire. When the wire is cooled down from $40\,^oC$ to $20\,^oC$ it regains its original length of $0.2\, m$. The value of $M$ is close to ........$kg$ (Coefficient of linear expansion and Young's modulus of brass are $10^{-5}/^oC$ and $10^{11}\, N/m^2$, respectively; $g = 10\, ms^{-2}$)
Consider an $NPN$ transistor amplifier in common-emitter configuration. The current gain of the transistor is $100.$ If the collector current changes by $1\, mA$, what will be the change in emitter current......$mA$
The half life of a radioactive element which has only $\frac{1}{{32}}$ of its original mass left after a lapse of $60\, days$ is ........$days$
Which of the following will reduce fehling solution