Ps2.1

What must the student do in the picture, in order to induce electricity and move the the galvonometer

• nothing

• move the magnet

• add more loops of wire

• unplug the galvnonmeter

Tags

NGSS.HS-PS2-5

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.

How can a wire become magnetic?

• point it north

• add a resistor

• heat it up

• run a current through it

Tags

NGSS.HS-PS2-5

Magnets and electromagnets can both be used to pick up metal items like iron nails. Although they are alike, there is a difference between magnets and electromagnets. An example of this is that increasing the current running through the electromagnet's wire will make it stronger. What is another difference?

• Increasing the amount of wire loops will increase the strength of an electromagnet

• There is no other difference between electromagnets and magnets.

• Electromagnets are always stronger than regular magnets.

• Decreasing the voltage will increase the strength

Tags

NGSS.MS-PS2-3

A group of students is investigating the different factors that affect the strength of an electric motor. A diagram of the motor is shown.

• A. Reduce the size of the axle running through the center of the motor.

• B. Increase the number of coils of wire within the two sections of the motor.

• C. Decrease the voltage of the power source being used to operate the motor.

• D. Place the permanent magnets and coils of wire farther apart inside the motor.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How would a bar magnet orient itself relative to this planet’s magnetic field?

• A

• B

• C

• D

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is this?

• magnet

• electromagnet

• series circuit

• parallel circuit

Any material that attracts iron or materials containing iron is a(n) 

•  electric generator

•  solenoid

• magnet

•  magnetic force

Tags

NGSS.MS-PS2-3

What kind of magnet can be turned on and off?

• refridgerator magnet

• electromagnet

• magnetite

• iron

Tags

NGSS.MS-PS2-3

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Remove all the coils and the nail.