MCQ
The resistivity of a wire depends on its
- ALength
- BArea of cross-section
- CShape
- ✓Material
✓
Answer
Correct option: D.
Material
d
(d) Resistivity depends only on the material of the conductor.
(d) Resistivity depends only on the material of the conductor.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
An electric dipole is placed on the $x-$axis as shown in the figure. Consider a spherical closed surface around it. Then
→Water is flowing through a horizontal pipe of non-uniform cross-section. At the extreme narrow portion of the pipe, the water will have
Select the appropriate property of an ideal gas
Consider two point charges of equal magnitude and opposite sign separated by a certain distance. The neutral point due to them
A charged particle is released from rest in a region of steady uniform electric and magnetic fields which are parallel to each other the particle will move in a
Two planets $A$ and $B$ having masses $m_1$ and $m_2$ move around the sun in circular orbits of $r_1$ and $r_2$ radii respectively. If angular momentum of $\mathrm{A}$ is $\mathrm{L}$ and that of $B$ is $3L$, the ratio of time period $\left(\frac{T_A}{T_B}\right)$ is:
→Two masses of $8\,kg$ and $4\,kg$ are connected by a string as shown in the figure over a fricitionless pulley. The acceleration of the system is ............ $ m/sec^2$
→An ideal gas of mass $m$ in a state $A$ goes to another state $B$ via three different processes as shown in figure. If $Q_{1}, Q_{2}$ and $Q_{3}$ denote the heat absorbed by the gas along the three paths, then
→The temperature of a body falls from ${50^o}C$to ${40^o}C$ in $10$ minutes. If the temperature of the surroundings is ${20^o}C$ Then temperature of the body after another $10$ minutes will be ........ $^oC$
→A current of $2\, mA$ was passed through an unknown resistor which dissipated a power of $4.4\, W$. Dissipated power when an ideal power supply of $11\, V$ is connected across it is
→