Advertisements
Advertisements
प्रश्न
State the effect of rise in temperature on the resistance of semi-conductors.
Advertisements
उत्तर
In the case of semi-conductors like carbon, silicon, germanium, etc., the resistance decreases with increase in temperature.
APPEARS IN
संबंधित प्रश्न
Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).
Give one example to show how the resistance depends on the nature of material of the conductor.
State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator.
A graph is plotted taking p.d. along y-axis and electric current along x-axis. Name the physical quantity that represents the slope of this graph (Fig.).
Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
How does the resistance of an alloy, vary with temperature?
State and explain the laws of resistance.
Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
