Advertisements
Advertisements
प्रश्न
How does (a) resistance, and (b) specific resistance of a wire depend on its (i) length, and (ii) radius?
उत्तर
Resistance is directly proportional to the length and inversely proportional to the square of radius. Specific resistance is independent on the dimensions of a wire.
APPEARS IN
संबंधित प्रश्न
Define specific resistance.
Write an expression connecting the resistance of a wire and specific resistance of its material. State the meaning of symbols used.
How does specific resistance of a semi-conductor change with the increase in temperature?
Distinguish between the resistivity and conductivity of a conductor.
To get 2 Ω resistance using only 6 Ω resistors, the number of them required is:
The resistivity does not change if ____________.
The resistivity of insulators is of the order of:
What is electrical resistivity? In a series electrical circuit comprising a resistor made up of a metallic wire, the ammeter reads 5 A. The reading of the ammeter decreases to half when the length of the wire is doubled. Why?
What happens to the specific resistance of a conductor if its length is doubled?
Two copper wires can have the different ______ but will have same ______.
