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प्रश्न
What transformation of energy takes place when current is drawn from a cell?
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उत्तर
Chemical energy changes into electrical energy.
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संबंधित प्रश्न
Write symbol and state function of following component in an electric circuit :
rheostat
State whether the resistance of filament of a bulb will decrease, remain unchanged or increase when it glows.
On increasing the resistance in a circuit, the current in it :
A charge of 8860 C flows through an electric circuit in 2 min and 40 s. Calculate the magnitude of current in a circuit.
Draw a diagram showing two bulbs connected in series to a dry cell.
The following figure shows a metal rod PQ mounted on an insulated stand. The cap of an uncharged electroscope touches one end Q of the metal rod. A negatively charged ebonite rod is brought near the other end P of the metal rod.
(a) What charge does the end P have?
(b) What charge does the end Q have?
(c) What charge does the cap of the electroscope have?
(d) What charge does the gold leaf have?
(e) Will the leaf diverge or collapse? Give reason.
(f) If the electroscope is now earthed, what charge does the metal rod have?
Write SI unit of
Resistance.
