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प्रश्न
How does the resistivity of an alloy such as constantace depends on temperature.
उत्तर
The resistivity of an alloy almost remains unaffected with change in tempeature.
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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?
Name the material which is the best conductor of electricity.
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?
State the order of resistivity of (i) a metal, (ii) a semiconductor and (iii) an insulator.
State how are the two resistors joined with a battery when same current flows in each resistor.
Define the term resistivity and state its S.I. unit. Which will have higher resistivity a conductor or an insulator.
State expression for Resistance connected in series.
Two resistors of 4Ω and 6Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
Draw a labelled circuit diagram showing the above arrangement.
