| 1 |
When electric current flows through an object it becomes a magnet. Such magnet is called. |
- A. Permanent magnet
- B. Temporary magent
- C. Elecromagent
- D. Non magnet
|
| 2 |
The ends of magnet are called its. |
- A. Heads
- B. Terminals
- C. Poles
- D. Sides
|
| 3 |
Magnet is not used in |
- A. A dynamo
- B. An electric bell
- C. A speaker
- D. A heater
|
| 4 |
The direction of the Qibla is determined by |
- A. Emitter
- B. Armature
- C. Magnetic Compass
- D. Electromagnet
|
| 5 |
A freely suspended bar magenet always stays along. |
- A. East west direction
- B. North south direction
- C. Any direction
- D. Keeps oscillating
|
| 6 |
The region around a magnet where it can attract magnetic materials is called. |
- A. Magnetic compass
- B. Magneti field
- C. Magnetic lines
- D. Magnetism
|
| 7 |
Whcih will not cause a magnet lose its magnetism. |
- A. Heating it
- B. Droppingit repeatedly
- C. Coating it with oil
- D. Hitting it
|
| 8 |
Which will not increase the strenght of an electromagnet. |
- A. Adding an iron core
- B. Adding a plastic core
- C. Coiling the wire
- D. Increasing the current
|
| 9 |
Electromagnets are used in |
- A. Elecric bell
- B. Speaker
- C. Dynamo
- D. All above
|
| 10 |
The needlcompass is always there |
- A. To the North and south direction
- B. To the West and south direction
- C. To the North and East direction
- D. To the North and West direction
|
