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प्रश्न
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उत्तर
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संबंधित प्रश्न
(a) Complete the circuit given in Fig. by inserting between the terminals A and C. an ammeter.
(b) In the diagram, mark the polarity at the terminals of ammeter and indicate clearly the direction of flow of current in the circuit when the circuit is complete.
(c) Name and state the purpose of Rh in the circuit.
How is the current flowing in a conductor changed if the resistance of conductor is doubled keeping the potential difference across it the same?
How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?
What do you understand by the term quantity of electric charge?
How many electrons constitute one unit electric charge in SI system?
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?
'The resistance of a wire is 2 ohm'. Explain the meaning of this statement.
What amount of work is required in moving 3 C charge through a potential difference of 6 V?
