Advertisements
Advertisements
प्रश्न
Draw a V-I graph for a conductor at two different temperatures. What conclusion do you draw from your graph for the variation of resistance of conductor with temperature?
Advertisements
उत्तर
In the above graph, T1 > T2. The straight line A is steeper than line B, which leads us to conclude that the resistance of a the conductor is more at high-temperature T1 than at low-temperature T2. Thus, we can say that the resistance of a conductor increases with an 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).
Write any two characteristics of a series combination of resistors.
Name the material which is the best conductor of electricity.
Calculate the resistance of an aluminium cable of length 10 km and diameter 2.0 mm if the resistivity of aluminium is 27 × 10−8 Ωm.
You are supplied with a number of 100 Ω resistors. How could you combine some of these resistors to make a 250 Ω resistor?
In series combination of resistances ______.
Two bulbs of 100 W and 40 W are connected in series. The current through the 100 W bulb is 1 A. The current through the 40 W bulb will be ______.
State a relation between electrical power, resistance and potential difference in an electrical circuit.
Two wires of same material and same lengths have radii in the ratio of 2 : 3, Compare their resistances.
