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प्रश्न
What is an electric cell?
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उत्तर १
An electric cell is a device which converts chemical energy into electrical energy. When connected in a circuit, it acts as a source of D.C. current.
उत्तर २
An electric cell is the source of electric current in which chemical energy changes to electrical energy.
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.
4 × 1020 electrons flow through a circuit in 10 hours. Calculate magnitude of current. [1 e- = 1.6 × 10-19 C]
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?
Draw a diagram showing two bulbs connected in series to a dry cell.
State two characteristics of resistance in the parallel circuit.
What is the function of a switch in an electric circuit?
State three factors on which the resistance of a wire depends. Explain, how does the resistance depend on the factors stated by you.
