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प्रश्न
What do you understand by the term electric resistance?
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उत्तर
Electric resistance: The obstruction offered to the passage of electric current by a material is called resistance of the material.
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संबंधित प्रश्न
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
State and define the S.I. unit of resistance.
A cell of potential difference 12 V is connected to a bulb. The resistance of filament of bulb when it glows is 24Ω. Find the current drawn from the cell.
State two conditions necessary for a circuit, such that electric current flows through it.
State the factors on which the electrical resistance of a wire depends.
'The resistance of a wire is 2 ohm'. Explain the meaning of this statement.
A wire of resistance 1 Ω is stretched to double its length. What will happen to the resistance of the stretched wire?
