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प्रश्न
What do you understand by the term resistance?
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उत्तर
The obstruction offered to the flow of current by the filament or wire is called its electrical resistance.
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संबंधित प्रश्न
Name the instrument used to control the current in an electric circuit.
(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.
Explain the concept of electric potential difference in terms of work done in transferring the charge.
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.
What is the electrical potential at a point in an electric field when 24 J of work is done in moving a charge of 96 C from infinity?
State the kind of charge on a negative ion.
