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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 equivalent resistance between points A and B.

Two resistors of 4Ω and 6 Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
(i) Draw a labelled circuit diagram showing the above arrangement.
(ii) Calculate the current in each resistor. What is an Ohmic resistor?
An electrical appliance has a resistance of 25 Ω. When this electrical appliance is connected to a 230 V supply line, the current passing through it will be:
(a) 0.92 A
(b) 2.9 A
(c) 9.2 A
(d) 92 A
How does the resistance of a pure metal change if its temperature decreases?
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.).

Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
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The resistance of two resistors joined in series is 8Ω and in parallel is 1.5Ω. Find the value of the two resistances.
