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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
Find the expression for the resistors connected in series and write the two characteristics of it. (Draw figure).
How does the resistance of a pure metal change if its temperature decreases?
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.
Name the following substances:
(i) Showing low resistivity,
(ii) Showing very high resistivity,
(iii) Showing moderate resistivity.
Why are thick copper wires used as connecting wires?
Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
In the circuit shown below, calculate the equivalent resistance between the points (i) A and B, (ii) C and D.
