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संबंधित प्रश्न
What is an electric cell?
Write symbol and state function of following component in an electric circuit :
rheostat
Define the term potential difference.
In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
State SI unit of electric charge and define it.
How electric current flows in liquids?
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
Potential difference
What is the function of a switch in an electric circuit?
