Related Mcqs:

1. Acharge which when placed in vacuum from an equal and similar charge repels with a force of 9 x 10 N, is known as_____________?

   A. milli-coulomb
   B. micro-coulomb
   C. pico-coulomb
   D. coulomb

2. The force between two charges is 120 N. If the distance between the charges is doubled, the force will be________________?

   A. 60 N
   B. 30 N
   C. 40 N
   D. 15 N

3. Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will_______________?

   A. decrease
   B. increase
   C. remain constant
   D. depends upon composition of dielectric

4. Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become_____________?

   A. 1/4th of its original value
   B. 1/8th of its original value
   C. 4 times of its original value
   D. 8 times of its original value

5. Two similar charges each of one coulomb placed in air one meter apart repel each other with a force______________?

   A. 9 x 109N
   B. 9.2 x 104N
   C. 9 x 109N
   D. 9 x 107N

6. The electrostatic force between two charges of one coulomb each and placed at a distance of 0.5 m will be____________?

   A. 36 x 10fa
   B. 36 x 107 N
   C. 36 x 108 N
   D. 36 x 109 N

7. The electric charge of 100 °C is 13cm apart from another charge 16.9°C electric force between them is_____________?

   A. 9x107N
   B. 900N
   C. 9x105N
   D. 9x106N

8. If the distance between the two point charges become half then force between them becomes______________?

   A. double
   B. half
   C. four times
   D. remains same

9. Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?

   A. positively charged
   B. electrically neutral
   C. negatively charged
   D. positively and negatively charged

10. A closed surface contains two equal and opposite charges. The net electric flux from the surface will be________________?

    A. negative
    B. positive
    C. zero
    D. data is insufficient