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प्रश्न
Write symbol and state function of following component in an electric circuit :
cell
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उत्तर
Cell symbol : 
; It acts as a source of direct current for the circuit.
संबंधित प्रश्न
State three differences between the primary and secondary cells.
When starter motor of a car is switched on for 0.8 s . a charge 24 C passes through the coil of the motor . Calculate the current in the coil .
In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
Define electric potential in terms of energy spent.
What do you understand by the term electric current?
How is potential difference related to work done and quantity of charge?
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?
