An atom has no electrical charge because .a. the number of protons is equal to the number of neutrons. b. the number of neutrons is equal to the number of electrons. c. the number of protons is equal to the number of electrons. d. all of the above

An atom has no electrical charge simply because the number of protons is equal to the number of electrons. However, if the atom gains an extra electron, it becomes negatively charged. If it loses and electron, then the atom becomes positively charged.

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The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.