A rectangular parallelopiped is measured as 1 ,cm 1 ,cm 100 ,cm. … - Vidyadip

MCQ

A rectangular parallelopiped is measured as $1\,cm \times 1\,cm \times 100\,cm$. If its specific resistance is $3 \times 10^{-7}\,\Omega\,m$, then the resistance between its two opposite rectangular faces will be $..........x^{-7} \Omega$.

A
$2$
B
$1$
✓
$3$
D
$4$

✓

Answer

Correct option: C.

$3$

c
$R =\rho \frac{\ell}{ A }=\frac{3 \times 10^{-7} \times\left(1 \times 10^{-2}\right)}{100 \times 1 \times 10^{-4}}$

$=3 \times 10^{-7} \Omega$

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

Explore more

More "M.C.Q (1 Marks)" from 3. current electricity→3. current electricity — all question types→Physics STD 12 Science question papers→CBSE Board STD 12 Science question papers→CBSE Board question paper generator→

Similar questions

The work$-$function of a metal is:

Five charges $+q,+5 q,-2 q,+3 q$ and $-4 q$ are situated as shown in the figure.

The electric flux due to this configuration through the surface $S$ is

If $c$ is the velocity of light in free space, the correct statements about photon among the following are:

$A$. The energy of a photon is $E=h v$.

$B$. The velocity of a photon is $c$.

$C$. The momentum of a photon, $p=\frac{h v}{c}$.

$D$. In a photon-electron collision, both total energy and total momentum are conserved.

$E$. Photon possesses positive charge.

Choose the correct answer from the options given below:

The refractive index of the material of the prism for violet colour is $1.69$ and that for red is $1.65.$ If the refractive index for mean colour is $1.66,$ the dispersive power of the material of the prism

The temperature dependence of resistances of $Cu$ and undoped $Si$ in the temperature range $300-400\ K$, is best described by

At time $t =0$, terminal $A$ in the circuit shown in the figure is connected to $B$ by a key and alternating current $I ( t )= I _0 \cos (\omega t$,$) , with I _0=1 A$ and $\omega=500 \ rad s ^{-1}$ starts flowing in it with the initial direction shown in the figure.

At $t=\frac{7 \pi}{6 \omega}$, the key is switched from $B$ to $D$. Now onwards on ly $A$ and $D$ are connected. $A$ total charge $Q$ flows from the battery to charge the capacitor fully. If $C =20 \mu, R =10 \Omega$ and the battery is ideal with emf of $50 \ V$, identify the correct statement $(s)$

$(A)$ Magnitude of the maximum charge on the capacitor before $t=\frac{7 \pi}{6 \omega}$ is $1 \times 10^{-3} C$.

$(B)$ The current in the left part of the circuit just before $t=\frac{7 \pi}{6 \omega}$ is clockwise

$(C)$ Immediately after $A$ is connected to $D$. the current in $R$ is $10 A$.

$(D)$ $Q =2 \times 10^{-3} C$.

Inductive reactance of a coil is expressed in.

A direct current of 4 A is flowing through any circuit. Root mean square value of the current is:

A highly conducting ring of radius $R$ is perpendicular to and concentric with the axis of a long solenoid as shown in fig. The ring has a narrow gap of width d in its circumference. The solenoid has cross sectional area A and a uniform internal field of magnitude $B_0$. Now beginning at $t = 0$, the solenoid current is steadily increased to so that the field magnitude at any time t is given by $B(t)$ = $B_0$ + $\alpha$t where $\alpha > 0$. Assuming that no charge can flow across the gap, the end of ring which has excess of positive charge and the magnitude of induced $e.m.f$. in the ring are respectively

Two point charges $A$ and $B$, having charges $+Q$ and $- Q$ respectively, are placed at certain distance apart and force acting between them is $\mathrm{F}$. If $25 \%$ charge of $A$ is transferred to $B$, then force between the charges becomes