MCQ
Dimension of $R$ (Resistance) is
  • A
    $M{L^2}{T^{ - 1}}$
  • $M{L^2}{T^{ - 3}}{A^{ - 2}}$
  • C
    $M{L^{ - 1}}{T^{ - 2}}$
  • D
    None of these

Answer

Correct option: B.
$M{L^2}{T^{ - 3}}{A^{ - 2}}$
b
(b) $R = \frac{V}{I}$$ = \left[ {\frac{{M{L^2}{T^{ - 3}}{A^{ - 1}}}}{A}} \right]$=$[M{L^2}{T^{ - 3}}{A^{ - 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

In a carnot engine, the temperature of reservoir is $527^{\circ} C$ and that of $\operatorname{sink}$ is $200 \; K$. If the workdone by the engine when it transfers heat from reservoir to sink is $12000 \; kJ$, the quantity of heat absorbed by the engine from reservoir is $\times 10^{6} \; J$
The origin of $x$ and $y$ coordinates is the pole of a concave mirror of focal length $20\, cm$. The $x$ -axis is the optical axis with $x > 0$ being the real side of mirror. $A$ point object at the point $(25\, cm, 1\, cm)$ is moving with a velocity $10\, cm/s$ in positive $x$ -direction. The velocity of the image in $cm/s$ is approximately
A point source of light is placed at $2 f$ from a converging lens of focal length $f$. A flat mirror is placed on the other side of the lens at a distance $d$ such that rays reflected from the mirror are parallel after passing through the lens again. If $f=30 \,cm$, then $d$ is equal to ............. $cm$
A wheel of radius $r$ rolling on a straight line, the velocity of its centre being $v$ .At a certain instant the point of contact of the wheel with the grounds is $M$ and $N$ is the highest point on the wheel (diametrically opposite to $M$). The incorrect statement is:
A conductor lies along the $z-$axis $a$ $-1.5$$ \le Z < 1.5\,m$ carries a fixed current of $10.0\ A$ in $ - {\hat a_z}$ direction (see figure). For a field $\vec B$ $=$ $3.0 \times  10^{-4}$  $e^{-0.2x}$ ${\hat a_y}\,T$ find the power required to move the conductor at constant speed to $x = 2.0\ m, y = 0\ m$ in $5 \times 10^{-3}\ s$. Assume parallel motion along the $x-$axis........$ W$
A charge moving with velocity $v$ in $X$-direction is subjected to a field of magnetic induction in the negative $X$-direction. As a result, the charge will
A monochromatic neon lamp with wavelength of $670.5\, {nm}$ illuminates a photo-sensitive material which has a stopping voltage of $0.48\, {V}$. What will be the stopping voltage if the source light is changed with another source of wavelength of $474.6 \,{nm} ?$ (In ${V}$)
In the $s-t$ equation $\left(s=10+20 t-5 t^2\right)$, match the following columns.
Colum $I$ Colum $II$
$(A)$ Distance travelled in $3\,s$ $(p)$ $-20$ units
$(B)$ Displacement in $1\,s$ $(q)$ $15$ units
$(C)$ Initial acceleration $(r)$ $25$ units
$(D)$ Velocity at $4\,s$ $(s)$ $-10$ units
A $10\  \mu F$ capacitor is charged to a potential difference of $1000\  V$. The terminals of the charged capacitor are disconnected from the power supply and connected to the terminals of an uncharged $6\ \mu F$ capacitor. What is the final potential difference across each capacitor.....$V$
$A$ uniform cylinder of mass $m$ can rotate freely about its own axis which is horizontal.$A$ particle of mass mo hangs from the end of a light string wound round the cylinder which does not slip over it. When the system is allowed to move, the acceleration of the descending mass will be