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प्रश्न
How does the resistivity of an alloy such as constantace depends on temperature.
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उत्तर
The resistivity of an alloy almost remains unaffected with change in tempeature.
संबंधित प्रश्न
How does the resistance of a wire change when:
its length is tripled?
The diagram below shows part of a circuit:
If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:
(a) 9 Ω
(b) 4 Ω
(c) 6 Ω
(d) 18 Ω
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
State how are the two resistors joined with a battery when same current flows in each resistor.
In series combination of resistances ______.
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.).
State a relation between electrical power, resistance and potential difference in an electrical circuit.
What is a resistance? Define it with respect to Ohm’s law,
If the current I through a resistor is increased by 100% (assume that temperature remains unchanged), the increase in power dissipated will be:
