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- Q1
What does electro magnet consist of?
coil, battery, ball pen
iron core, battery, conductor
electric current, metals, switch
magnet, coil wire, dry cell
30sS5FE-IIIi-j-9 - Q2
How can we increase the strength of the magnetic field of an electromagnet?
clip on the alligator clips
expose to more light
put more paper clips to pick up
add more copper wire to coil
30sS5FE-IIIi-j-9 - Q3
Which of the following serves as core of electric current in an electromagnet?
battery
iron nail
thumbtacks
copper wire
30sS5FE-IIIi-j-9 - Q4
Which things at home would have an electromagnet?
steel cabinet
ironing stand
gas stove
electric fan
30sS5FE-IIIi-j-9 - Q5
Which material should we use to construct an electromagnet?
Use a silver spoon as core
Use abaca rope as wire.
Use yarn as wire.
Use a black crayon as core.
30sS5FE-IIIi-j-9 - Q6
What flows through the conductor or copper wire in an electromagnet?
light waves
heat energy
electric current
static electricity
30sS5FE-IIIi-j-9 - Q7
All of these help in strengthening the magnetic field of the electromagnet except one. Which one is it?
adding more dry cells as source
coiling more copper wire to the core
placing a bigger iron nail as core
using chopsticks as iron core
30sS5FE-IIIi-j-9 - Q8
What is a force of attraction or repulsion of magnetic materials due to the management of atoms?
Magnetism
Electricity
Circuit
Electromagnet
30sS5FE-IIIi-j-9 - Q9
The relationship between the strength of an electromagnet and the number of coils is directly proportional. This means that -----
As the number of coil increases, the strength of the electromagnet is still the same.
As the number of coil decreases, the strength of the electromagnet increases.
As the number of coil increases, the strength of the electromagnet increases.
As the number of coil increases, the strength of the electromagnet decreases.
30sS5FE-IIIi-j-9 - Q10
An electromagnet is surrounded by a coil of wire through which an electric current pass through. Which electromagnet can attract more pins?
30sS5FE-IIIi-j-9
