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

Related Mcqs:

1. 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

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 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

4. Electric intensity at infinite distance from the point charge is_____________?

   A. zero
   B. infinite
   C. positive
   D. negative

5. A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is___________?

   A. 100 kV/m
   B. 10 kV/m
   C. 5 kV/m
   D. 2 kV/m

6. 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

7. An electric charge at rest produces_______________?

   A. only a magnetic field
   B. only an electric field
   C. neither electric field nor magnetic field
   D. both electric and magnetic fields

8. Electric flux due to a point charge +q is______________?

   A. 1/4IIɛ q/r
   B. q/ɛ0
   C. 1/4IIɛ0. q/r2
   D. 4IIɛ0

9. 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

10. Electric intensity at any point in an electric field is equal to the at that point?

    A. electric flux
    B. magnetic flux density
    C. potential gradient
    D. none of the above