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प्रश्न
Give one example to show how the resistance depends on the nature of material of the conductor.
उत्तर
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संबंधित प्रश्न
Find the equivalent resistance between points A and B.
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
Calculate the combined resistance in each case:
A p.d. of 4 V is applied to two resistors of 6 Ω and 2 Ω connected in series. Calculate:
(a) the combined resistance
(b) the current flowing
(c) the p.d. across the 6 Ω resistor
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
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
To increase the effective resistance in a circuit, the resistors are connected in _______________ .
Choose the correct alternative and rewrite the following:
You are given three equal resistances. In how many combinations can they are arranged?
Write an expression for the resistance of a conducting wire in terms of its length and area of cross-section.
State a relation between electrical power, resistance and potential difference in an electrical circuit.
