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प्रश्न
State the S.I. unit of resistance.
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उत्तर
संबंधित प्रश्न
Define the term potential difference.
State and define the S.I. unit of resistance.
How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same?
A current 0.2 A flows in a wire of resistance 15Ω. Find the potential difference across the ends of the wire.
How electric current flows in solids?
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
