| 1 |
Magnet is not used in |
- A. A dynamo
- B. An electric bell
- C. A speaker
- D. A heater
|
| 2 |
A magnet can lose its magnetc peroperty it is called. |
- A. Magenetism
- B. Demagnetization
- C. Magnetic field
- D. None of these
|
| 3 |
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
|
| 4 |
The ends of magnet are called its. |
- A. Heads
- B. Terminals
- C. Poles
- D. Sides
|
| 5 |
The direction of the Qibla is determined by |
- A. Emitter
- B. Armature
- C. Magnetic Compass
- D. Electromagnet
|
| 6 |
Whcih will not cause a magnet lose its magnetism. |
- A. Heating it
- B. Droppingit repeatedly
- C. Coating it with oil
- D. Hitting it
|
| 7 |
The space around a magenet where it can attract magnetic materials. |
- A. Electric field
- B. Magnetic field
- C. Magnetic pole
- D. Magnetic core
|
| 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 |
A magnet can attract objects made of |
- A. Silver
- B. Aluminum
- C. Iron
- D. Copper
|
| 10 |
How may poles are there on a ring shaped magnet. |
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