Question 1

What does electromagnet consist of?

Accepted Answer

magnet, coil wire, dry cell

Answer

electric current, metals, switch

Answer

iron core, battery, conductor

Answer

coil, battery, ball pen

Question 2

How can we increase the strength of the magnetic field of an electromagnet?

Accepted Answer

add more copper wire to coil

Answer

put more paper clips to pick up

Answer

expose to more light

Answer

clip on the alligator clips

Question 3

Which of the following serves as core of electric current in an electromagnet?

Accepted Answer

iron nail

Answer

battery

Answer

copper wire

Answer

thumbtacks

Question 4

Which things at home would have an electromagnet?

Accepted Answer

electric fan

Answer

steel cabinet

Answer

gas stove

Answer

ironing stand

Question 5

Which material should we use to construct an electromagnet?

Accepted Answer

Use a silver spoon as core

Answer

Use yarn as wire.

Answer

Use abaca rope as wire.

Answer

Use a black crayon as core.

Question 6

What flows through the conductor or copper wire in an electromagnet?

Accepted Answer

electric current

Answer

static electricity

Answer

light waves

Answer

heat energy

Question 7

All of these help in strengthening the magnetic field of the electromagnet
except one. Which one is it?

Accepted Answer

using chopsticks as iron core

Answer

adding more dry cells as source

Answer

coiling more copper wire to the core

Answer

placing a bigger iron nail as core

Question 8

What is a force of attraction or repulsion of magnetic materials due to the
management of atoms?

Accepted Answer

Electromagnet

Answer

Magnetism

Answer

Circuit

Answer

Electricity

Question 9

The relationship between the strength of an electromagnet and the number of
coils is directly proportional.  This means that -----

Accepted Answer

As the number of coil increases, the strength of the electromagnet increases

Answer

As the number of coil decreases, the strength of the electromagnet
increases.

Answer

As the number of coil increases, the strength of the electromagnet
decreases.

Answer

As the number of coil increases, the strength of the electromagnet is still the
same.

Question 10

Which property of matter do we need in constructing an electromagnet?

Accepted Answer

conductivity

Answer

brittleness

Answer

flexibility

Answer

ductility

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