MCQ
Which of the following statement is correct
  • A
    Liquids obey fully the ohm's law
  • Liquids obey partially the ohm's law
  • C
    There is no relation between current and p.d. for liquids
  • D
    None of the above

Answer

Correct option: B.
Liquids obey partially the ohm's law
b
(b) In $V-I$ graph, we will not get a straight line in case of liquids.

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

Current density in a cylindrical wire of radius $R$ is given as $J =$ $\left\{ {\begin{array}{*{20}{c}}
  {{J_0}\left( {\frac{x}{R} - 1} \right)\,\,for\,\,0 \leqslant x < \frac{R}{2}} \\ 
  {{J_0}\frac{x}{R}\,\,\,\,for\,\,\,\frac{R}{2} \leqslant x \leqslant R} 
\end{array}} \right.$The current flowing in the wire is:
A total charge $Q$ is broken in two parts ${Q_1}$ and ${Q_2}$ and they are placed at a distance $R$ from each other. The maximum force of repulsion between them will occur, when
The drift velocity of electrons in silver wire with cross-sectional area $3.14 \times 10^{-6}\,m ^2$ carrying a current of $20\,A$ is. Given atomic weight of $Ag =108$ , density of silver $=10.5 \times 10^3\,kg / m ^3..........\times 10^{-4} m / sec$.
A parallel plate capacitor with air as medium between the plates has a capacitance of $10\,\mu F$. The area of capacitor is divided into two equal halves and filled with two media as shown in the figure having dielectric constant ${k_1} = 2$and ${k_2} = 4$. The capacitance of the system will now be.......$\mu F$
A semiconductor is doped with a donor impurity:
A coil having $100$ turns, area of $5 \times 10^{-3} \mathrm{~m}^2$, carrying current of $1 \mathrm{~mA}$ is placed in uniform magnetic field of $0.20 \mathrm{~T}$ such a way that plane of coil is perpendicular to the magnetic field. The work done in turning the coil through $90^{\circ}$ is . . . . . . $\mu \mathrm{J}$.
Two $220\; V , 100 \;W$ bulbs are connected first in series and then in parallel. Each time the combination is connected to a $220 \;V \;AC$ supply line. The power drawn by the combination in each case respectively will be
A time varying current $i$ is passed through a resistance $R$ as shown in figure. The total heat generated in the resistance is
A compound microscope has an eye piece of focal length $10 \,cm$ and an objective of focal length $4 \,cm$. Calculate the magnification, if an object is kept at a distance of $5 \,cm$ from the objective so that final image is formed at the least distance vision $(20\, cm)$
The focal length of the objective lens of a compound microscope is