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

Related Mcqs:

1. 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

2. 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

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. 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

5. 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

6. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is______________?

   A. 0.56 x 1015 m/s2
   B. 1.5 x 1015 m/s2
   C. 1.6 x 1015 m/s2
   D. 1.76 x 1015 m/s2

7. 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

8. 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

9. 1 Coulomb = ___________ e.

   A. 6×10^-19
   B. 6.25×10¹⁸
   C. 1.6×10¹⁹
   D. 6.25×10^-18

   Submitted by: Danish Rehman

10. 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