1. ___a device used to store sound and picture

2. ___an instrument used to measure the current in a circuit

3. ___points of maximum amplitude of stationary waves.

4. ____A capacitor whose plates can move

5. ___ current which flows always in one direction

6. ___is a sensitive instrument which detects current in a circuit

7. ____the elements whose Atomic number is greater than 82

8. Now a days ____is the major source of world communication.

9. ___is an instrument used to measure potential difference between two points

10. ___Numbers of protons present in the nucleus

11. The current which does not change its direction of flow is known as ___

12. The isotopes which emit radiations are called ____

13. The means of transmission of information to far of places is called

14. ____Bending of waves round an obstacle

15. That branch of electronics which processes the data being provided in form of digits is known _____

16. ___is a device which stores electric charge

17. To draw figures by computer without using drawing material is called the ____

18. The elements which have same Atomic number but different Atomic mass number are called ____.

19. ____an electric instrument which increases or decreases the value of alternating voltage

20. Q a process in which the light nuclei diffuse to form a heavier nucleus is called_____