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प्रश्न
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संबंधित प्रश्न
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 .
State three factors on which the resistance of a wire depends. Explain how the resistance depends on the factors stated by you.
What do you understand by the term electric current?
State the relation between electric current; the number of electrons moving in a circuit and time in seconds.
What do you understand by the term electric resistance?
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?
