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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
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio `"R"/"R'"` is ______.
How does the resistance of a wire change when:
its diameter is tripled?
Calculate the combined resistance in each case:
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
In series combination of resistances ______.
How does the resistance of an alloy, vary with temperature?
State the effect of rise in temperature on the resistance of semi-conductors.
Six equal resistors of 1 ohm each are connected to form the sides of a hexagon ABCDEF. Calculate the resistance offered by the combination if the current enters at A and leaves it at D.
