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
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 12 Ω, respectively. How much current would flow through the 12 Ω resistor?
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 ______.
The voltage applied to a given rheostat is made four times its initial value. By what factor will be resistance of the rheostat change?
Calculate the equivalent resistance between P and Q from the following diagram:
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
A metal wire of resistance 6 Ω is stretched so that its length is increased to twice its original length. Calculate its new resistance.
The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
Two wires of the same length and area made of two materials of resistivity ρ1 and ρ2 are connected in series to a source of potential V. The equivalent resistivity for the same area is:
