Science 5-Q3-Written Test 4
Quiz by RELIZA ALIMANGO
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What is an electromagnet?
29Permanent magnet
Important magnet
Useful magnet
Temporary magnet
- Q1
What is an electromagnet?
Permanent magnet
Important magnet
Useful magnet
Temporary magnet
30sS5FE-IIIg-7 - Q2
The ability of some materials to attract certain metals is called
Users re-arrange answers into correct orderJumble30sS5FE-IIIg-7 - Q3
Amy wants to construct his own electromagnet. What are the materials he is going to use?
Paper clips, pins and magnet
Battery, wire and nail
Battery, nail and magnet
Magnet, nail and wire
30sS5FE-IIIg-7 - Q4
If you will connect the North pole of one magnet to the South pole of another magnet, the two poles will ______.
explode
contract
attract
repel
30sS5FE-IIIg-7 - Q5
How are electromagnets different from other magnets?
Electromagnet is more powerful than any other magnets.
electromagnet is a permanent magnet.
Electromagnet can be turned on and off
Electromagnet is bigger than any other magnets
30sS5FE-IIIg-7 - Q6
In an electromagnet, what do you call the region around the wire where the force of magnetism felt?
plunger
solenoid
core
Magnetic field
30sS5FE-IIIg-7 - Q7
How can you increase the strength of an electromagnet?
By adding more magnets
By letting the electricity flows through it.
By adding more drycells or batteries
By adding longer wires
30sS5FE-IIIg-7 - Q8
The following tells of the factors affecting the strength of an electromagnet except for one. What is it?
Increase the number of loops of wire around the iron core
Decrease the number of turns of wire in the nail
Changing the size of the nail or the iron core
Adding more batteries or dry cells
30sS5FE-IIIg-7 - Q9
Why was electromagnet called a temporary magnet?
Because it cannot bedetached to its source of electricity
Because it has a power of its own
Because it can only be used once
Because it can be detached to its source of electricity
30sS5FE-IIIg-7 - Q10
How does electromagnet work for us?
It helps in transmitting signals through telephones, radio and television
It attracts metal objects
It makes our work easier
Its good to see how it attracts metal objects
30sS5FE-IIIg-7