1. What is the unit of electric current?
2. Which device is used to open or close an electric circuit?
3. What is the filament in an electric bulb made of?
4. Which of the following is a good conductor of electricity?
5. Electric current produces which effect?
6. What is the symbol for a battery in an electric circuit diagram?
7. A device that converts electrical energy into heat is called?
8. Electric fuse is used for?
9. What happens when a current flows through a wire?
10. Which of these materials is an insulator?
1. What is the unit of electric current?
2. Which device is used to open or close an electric circuit?
3. What is the filament in an electric bulb made of?
4. Which of the following is a good conductor of electricity?
5. Electric current produces which effect?
6. What is the symbol for a battery in an electric circuit diagram?
7. A device that converts electrical energy into heat is called?
8. Electric fuse is used for?
9. What happens when a current flows through a wire?
10. Which of these materials is an insulator?
11. Which of these can break a circuit?
12. The flow of electrons in a circuit is called?
13. Which metal is commonly used in electric wires?
14. A glowing bulb in a circuit indicates?
15. What is used to measure electric current?
16. In a torch, the source of electricity is?
17. An electromagnet is formed by?
18. A fuse wire is made of?
19. What does a bulb do in a circuit?
20. Which of these materials is NOT an insulator?
21. Electric bell works on which effect?
22. The part of the bulb that glows is?
23. An electric cell has how many terminals?
24. Which of these is a conductor?
25. A closed circuit allows?
26. Which symbol represents a switch in ON position?
27. Which is not an electrical appliance?
28. Resistance in wires causes?
29. Which of these is NOT a component of an electric circuit?
30. Which of these gets magnetized when current flows?
31. The positive terminal of a cell is marked with?
32. A simple circuit contains?
33. The electric bulb glows due to?
34. What is the function of a switch?
35. Which device protects from overcurrent?
36. Which appliance uses heating effect of current?
37. Electric current can produce?
38. Why is copper used in wires?
39. What happens if the circuit is open?
40. Which material glows when electricity passes?