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प्रश्न
Draw a diagram showing two bulbs connected in series to a dry cell.
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उत्तर
Two bulbs glowing dimly
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संबंधित प्रश्न
How are the potential difference (V), current (l) and resistance (R) related?
State three factors on which the resistance of a wire depends. Explain how the resistance depends on the factors stated by you.
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
In which direction electronic current flows?
Calculate the total number of electrons flowing through a circuit in 20 mins and 40 s, if a current of 40 μA flows through the circuit.
[1 e– = 1.6 × 10-19 C]
State two characteristics of resistances in the series circuit.
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
A bulb is connected to a cell. How is the resistance of circuit affected if another identical bulb is connected (i) in series, (ii) in parallel, with the first bulb?
