The ability of charged bodies to exert force on 6ne another is attributed to the existence of____________?

Related Mcqs:

1. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as____________?

   A. pholoelectric effect
   B. chemical effect
   C. magnetic effect
   D. induction

2. The lines of force due to charged particles are_________?

   A. always straight
   B. always curved
   C. sometimes curved
   D. none of the above

3. 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

4. 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

5. The electric field at a point situated at a distance d from straight charged conductor is____________?

   A. proportional to d
   B. inversely proportional to d
   C. inversely proportional to d
   D. none of the above

6. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the____________?

   A. Voltage across the plates increases
   B. voltage across the plates decreases
   C. charge on the capacitor decreases
   D. charge on the capacitor increases

7. A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be_____________?

   A. 10 F
   B. 10 uF
   C. 100 nF
   D. 1000 uF

8. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is__________?

   A. 50 joules
   B. 150 joules
   C. 200 joules
   D. 250 joules

9. If a 6 uF capacitor is charged to 200 V, the charge in coulombs will be____________?

   A. 800 uC
   B. 900 uC
   C. 1200 uC
   D. 1600 uC

10. 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