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प्रश्न
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
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उत्तर
Manganin
संबंधित प्रश्न
How does the resistance of a pure metal change if its temperature decreases?
Give one example to show how the resistance depends on the nature of material of the conductor.
What is (a) highest, and (b)Ω lowest, resistance which can be obtained by combining four resistors having the following resistances?
4 Ω, 8 Ω, 12 Ω, 24 Ω
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.).
Name the following substances:
(i) Showing low resistivity,
(ii) Showing very high resistivity,
(iii) Showing moderate resistivity.
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
You are provided with three resistors of resistance 1.0 Ω, 2.0 Ω and 3.0 Ω How would you connect them to obtain the total effective resistance 1.5 Ω? Draw diagram of the arrangement and check it by calculations.
The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
What is the maximum resistance which can be made using five resistors each of `1/5` W?
