Class 12 Physics Chapter 1 Electric Charges and Fields PDF

Class 12 Physics Chapter 1 Electric Charges and Fields MCQs 1. If the sizes of charged bodies are very small compared to the distances between them, we treat them as (a) Zero charges (b) Point charges (c) Single charge (d) No charges 2. The force per unit charge is known as...

Class 12 Physics Chapter 1 Electric Charges and Fields MCQs 1. If the sizes of charged bodies are very small compared to the distances between them, we treat them as (a) Zero charges (b) Point charges (c) Single charge (d) No charges 2. The force per unit charge is known as (a) Electric current (b) (b) Electric potential (c) (c) Electric field (d) (d) Electric space 3. State true or false: The total charge of the isolated system is NOT conserved. (a) True (b) False 4. What is the dielectric constant of a metal? (a) -1 (b) 0 (c) 1 (d) Infinite 5. If the charge of 1 C is placed at a distance of 1 m from another charge of the same magnitude in a vacuum, it experiences an electrical force repulsion of magnitude (a) 9 × 10-9 N (b) 9 × 109 N (c) 10 × 109 N (d) 10 × 10-9 N 6. Quantisation of charge indicates that (a) Charge, which is a fraction of a coulomb, is not possible (b) A charge cannot be destroyed (c) Charge exists on particles (d) There exists a minimum permissible charge on a particle 7. The property which differentiates two kinds of charges is called (a) Equality of charge (b) Polarity of charge (c) Fraction of charge (d) None of the option 8. --------------- gives the information on field strength, direction, and nature of the charge. (a) Electric current (b) Electric flux (c) Electric field (d) Electric potential 9. F = q1q2/r2, this is given by which law? (a) Faraday’s law (b) Newton’s law (c) Coulomb’s law (d) Fleming’s law 10. What happens when a glass rod is rubbed with silk? (a) gains protons from silk (b) gains electrons from silk (c) gives electrons to silk (d) gives protons to silk **********Answer Key********** 1-(b) 2-(c) 3-(b) 4-(d) 5-(b) 6-(a) 7-(b) 8-(c) 9-(c) 10-(a)