If a charged rod is brought closer to a gas filled balloon then______________?

Related Mcqs:

1. A metal rod of 25 cm length is moving at a speed of 0.5/sec in direction perpendicular to 0.25T magnetic field. Emf produced in the rod is_____________?

   A. 0 volt
   B. 3.125 volt
   C. 31.25 volt
   D. 0.03125 volt

2. 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

3. When we rub a glass rod with a silk cloth then________________?

   A. glass rod acquires negative charge while silk acquires positive charge
   B. glass rod acquires positive charge while silk acquires negative charges
   C. both glass rod and silk acquire negative charge
   D. both glass rod and silk acquire positive charge

4. For closer tolerances which of the following capacitors is usually preferred ?

   A. Paper capacitor
   B. Mica capacitor
   C. Ceramic disc capacitor
   D. None of the above

5. 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

6. In a charged capacitor the energy resides in________________?

   A. magnetic hield
   B. electric field
   C. nuclear field
   D. gravitational field

7. If metallic conductor is charged negatively then its weight______________?

   A. Remains same
   B. First increases then decreases
   C. Decreases then increases
   D. Increases for a while

8. A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be_________________?

   A. 900 volts
   B. 9000 volts
   C. 90 volts
   D. zero

9. An uncharged conductor is placed near a charged conductor, then_____________?

   A. the uncharged conductor gets charged by conduction
   B. the uncharged conductor gets charged by induction and then attracted towards the charging body
   C. the uncharged conductor is attracted first and then charged by induction
   D. it remains as such

10. Energy stored in the electric field of a capacitor C when charged from a D.C source of voltage V is equal to joules_______________?

    A. CV2
    B. C2V
    C. CV2
    D. CV