Advertisements
Advertisements
प्रश्न
Name two factors on which the specific resistance of a wire depends?
उत्तर
The specific resistance of a wire depends on the material of the substance and the temperature of the substance.
APPEARS IN
संबंधित प्रश्न
For which of the following substance, resistance decreases with increase in temperature?
How does (a) resistance, and (b) specific resistance of a wire depend on its (i) length, and (ii) radius?
What is the maximum resistance which can be made using five resistors each of 1/5 Ω?
The proper representation of series combination of cells obtaining maximum potential is
![]() |
![]() |
![]() |
![]() |
(i) | (ii) | (iii) | (iv) |
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be
Write the relationship between electrical resistance and electrical resistivity for a metallic conductor of a cylindrical shape. Hence derive the SI unit of electrical resistivity.
Find the resistivity of the material of a metallic conductor of length 2 m and area of cross-section 1.4 × 10-6 m2. The resistance of the conductor is 0.04 ohm.
The specific resistance of a conductor depends on its ______.
State the order of specific resistance of a semiconductor.
State the order of specific resistance of an insulator.