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प्रश्न
State the two kinds of cell. Give one example of each.
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उत्तर
Two kinds of cells:
(a) Primary cell: e.g. Leclanche cell
(b) Secondary cell: Lead (or acid) accumulator
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संबंधित प्रश्न
The unit of current is :
State and define the S.I. unit of potential difference.
Name the physical quantity of which the unit is volt
How electric current flows in liquids?
State two conditions necessary for a circuit, such that electric current flows through it.
The following Figure represents a negatively charged gold Ieaf electroscope. Label the parts, P, Q, and R and the estate whether each is an insulator or a conductor. Also, indicate the distribution of charges on the system in the diagram.
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?
