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प्रश्न
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उत्तर
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संबंधित प्रश्न
Write symbol and state function of following component in an electric circuit :
cell
Explain the concept of electric potential difference in terms of work done in transferring the charge.
State and define the SI unit of electric current.
What do you mean by an electric current?
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?
What is the other name of a variable resistor?
Compare the brightness of two 60 watt bulbs.
When they are connected in series.
Explain giving scientific reasons.
