Basic Principles of Electricity MCQs 20 min Score: 0 Attempted: 0/20 Subscribe 1. A_______ is the smallest particle of an element. (A) Matter (B) Element (C) Substance (D) Atom 2. An atom is the _______ of an element that retains its characteristics. (A) Biggest (B) Largest (C) Smallest (D) Heaviest 3. The central part of atom is _______. (A) Electron (B) Nucleus (C) Neutron (D) Proton 4. Proton has _______ charge. (A) Negative (B) Neutral (C) Positive (D) Random 5. Proton is _______ times heavier than electron. (A) 1836 (B) 1842 (C) 1840 (D) 1974 6. The number of _______ and protons are equal in an atom. (A) Shells (B) Neutrons (C) Nucleus (D) Electrons 7. A neutron is _______ times heavier than electron. (A) 1842 (B) 1836 (C) 1846 (D) 1850 8. Electron has _______ charge. (A) Positive (B) Negative (C) No (D) Constant 9. Electron is _______ than the mass of proton. (A) Heavier (B) Smaller (C) Bigger (D) Lighter 10. An atom has _______ number of electrons and protons. (A) Greater (B) Equal (C) Lesser (D) Unequal 11. The shells around the nucleus are named as _______. (A) A, B, C... (B) X, Y, Z... (C) K, L, M... (D) None of above 12. K shell has _______ electrons. (A) 6 (B) 4 (C) 2 (D) 8 13. The electron in incomplete outermost orbit is called _______ electron. (A) Heavy (B) Lighter (C) Unique (D) Valance 14. The _______ is the closest shell to the nucleus. (A) N (B) L (C) M (D) K 15. Valance electrons are _______ tightly bound to the atom. (A) Very (B) Also (C) Less (D) None of above 16. The material that does not conduct current is called _______. (A) Conductor (B) Insulator (C) Semi conductor (D) Composite 17. The material between conductor and insulator is called _______. (A) Matter (B) Composite (C) Ceramics (D) Semiconductor 18. A conductor is a material that _______ conducts electrical current. (A) Swiftly (B) Easily (C) Sharply (D) Fast 19. The unit of current is _______. (A) Joule (B) Ampere (C) Volt (D) Ohm 20. The unit of potential is _______. (A) Current (B) Volt (C) Ampere (D) Ohm
