Advertisements
Advertisements
Question
How does the resistance of an alloy, vary with temperature?
Advertisements
Solution
The resistance of an alloy remains nearly unaffected by the change in temperatue.
RELATED QUESTIONS
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
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.).

What do you mean by power rating of an electrical appliance? How do you use it to calculate
(a) the resistance of the appliance and
(b) the safe limit of the current in it, while in use?
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
What is a resistance? Define it with respect to Ohm’s law,
Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of 4 Ω.
