All mammals are animals, but all animals are not mammals. The drastic feature which separates a mammal from an animal is that mammals have mammary glands, which all animals do not have.

A diode is a type of electrical device that allows current to move through it in only one direction. It consists of an N-type semiconductor and a P-type semiconductor that are placed together. A capacitor...

Gene is a unit of heredity which is composed of DNA occupying a fixed position on a chromosome. Genome is defined as a group of all genes compromising of a haploid set of chromosomes.

Battery is a device that consists of electrochemical cells that convert stored chemical energy into electrical energy. Rechargeable batteries are also known as secondary batteries. These batteries are capable...

Capacitor is a device that is used to store an electric charge. It is basically an arrangement of conductors. Capacitor stores electrical energy directly as an electrostatic field is created between two metal...