Advertisements
Advertisements
प्रश्न
The resistivity does not change if
पर्याय
the material is changed
the temperature is changed
the shape of the resistor is changed
both material and temperature are changed
उत्तर
the shape of the resistor is changed
Explanation -
Resistivity of a material depends only on the temperature and the nature of material. Shape of the resistor has no effect on the resistivity.
APPEARS IN
संबंधित प्रश्न
Write an expression connecting the resistance of a wire and specific resistance of its material. State the meaning of symbols used.
How does (a) resistance, and (b) specific resistance of a wire depend on its (i) length, and (ii) radius?
What is the S.I unit of electrical conductivity?
The resistivity does not change if ____________.
The resistivity of insulators is of the order of:
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be
The S.I unit of resistance is ______.
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 ______.
Two wires of the same material and same length have radii 1 mm and 2 mm respectively. Compare their specific resistance.
