Atoms and Electrons » Exercise - 149. According to Coulomb’s first law : (a) Like charges attract each other (b) Like charges repel each other (c) There is no force between the charges (d) None of these
Atoms and Electrons » Exercise - 129. ........ number of electrons is responsible for its chemical and electrical properties. (a) 32 (b) 14 (c) 16 (d) 9
Atoms and Electrons » Exercise - 268. The electrons in the conduction band are known as ........ (a) bound electrons (b) valence electrons (c) free electrons (d) none of the above
Atoms and Electrons » Exercise - 252. The kinetic energy of a bounded electron is ........ that of an unbounded electron. (a) Less than (b) Twice than (c) Greater than (d) Same as
Atoms and Electrons » Exercise - 254. When separation between two charges is increased, the potential energy : (a) Increases (b) Decreases (c) Remains constant (d) Either a or b