Advertisements
Advertisements
Question
What is an electric cell?
Solution 1
An electric cell is a device which converts chemical energy into electrical energy. When connected in a circuit, it acts as a source of D.C. current.
Solution 2
An electric cell is the source of electric current in which chemical energy changes to electrical energy.
RELATED QUESTIONS
State the two kinds of cell. Give one example of each.
State and define the S.I. unit of resistance.
State Ohm's law.
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?
