| 1 |
Which will not increase the strenght of an electromagnet. |
Adding an iron core
Adding a plastic core
Coiling the wire
Increasing the current
|
| 2 |
Whcih will not cause a magnet lose its magnetism. |
Heating it
Droppingit repeatedly
Coating it with oil
Hitting it
|
| 3 |
The space around a magenet where it can attract magnetic materials. |
Electric field
Magnetic field
Magnetic pole
Magnetic core
|
| 4 |
Magnet is not used in |
A dynamo
An electric bell
A speaker
A heater
|
| 5 |
A freely suspended bar magenet always stays along. |
East west direction
North south direction
Any direction
Keeps oscillating
|
| 6 |
The ends of magnet are called its. |
Heads
Terminals
Poles
Sides
|
| 7 |
A magnet can attract objects made of |
Silver
Aluminum
Iron
Copper
|
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