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प्रश्न
Write SI unit of
Electric current,
उत्तर
S. I unit of electric current is Ampere
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संबंधित प्रश्न
What is an electric cell?
Explain why does a metal wire when connected to a cell offer resistance to the flow of current.
Why does the filament of an electric bulb in an electric circuit get white-hot, but not the connecting wires?
Draw a diagram showing two bulbs connected in parallel 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?
