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प्रश्न
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उत्तर
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संबंधित प्रश्न
Write any two characteristics of a series combination of resistors.
Write down an expression for the resistance of a metallic wire in terms of the resistivity.
Give the law of combination of resistances in series.
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
Name a substance of which the resistance remains almost unchanged by the increase in temperature.
What do you mean by power rating of an electrical appliance? How do you use it to calculate
(a) the resistance of the appliance and
(b) the safe limit of the current in it, while in use?
State a relation between electrical power, resistance and potential difference in an electrical circuit.
State and explain the laws of resistance.
Calculate the equivalent resistance between P and Q from the following diagram:
In an electrical circuit, two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be ______.
