Related Mcqs:

1. If a third equal and similar charge is placed between two equal and similar charges, then this third charge will_____________?

   A. move out of the field of influence of the two charges
   B. remain in stable equilibrium
   C. not be in equilibrium
   D. be in unstable equilibrium

2. 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

3. 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

4. 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

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. A positive and a negative charge are initially 50 mm apart. When they are moved close together so that they are now only 10 mm apart, the force between them will be________________?

   A. 5 times smaller than before
   B. 5 times greater than before
   C. 10 times greater than before
   D. 25 times larger than before

8. The force per unit charge is know as__________________?

   A. electric flux
   B. electric intensity
   C. electric potential
   D. all of above are same

9. The number of electrons in one coulomb charge is equal to_______________?

   A. 6.2 x 1018
   B. 1.6 x 1019
   C. 6.2 x 1021
   D. 1.6 x 10-27

10. The value of dielectric constant for vacuum is taken as____________?

    A. zero
    B. 1
    C. 4
    D. 10