What makes an electromagnet stronger?

Increase the number of wire wraps around the iron core

decrease the strength of the power source

What is the relationship between electrical current and magnetic field strength in an electromagnet?

When current is increased, magnetic field strength increases

When current is increased the strength of magnetic field decreases

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

Add more coils of wire to the nail.

Reverse the poles of the magnet.

Remove all the coils and the nail.

How are electromagnets different from magnets?

you can turn an electromagnet on/off

magnets have a North and South pole

An invisible force that attracts electrically charged particles

What would happen if you broke a magnet in half?

You would have two new pieces which would have a north and south pole

Neither pole would be magnetic anymore

You would have two magnets, one with only a north pole and the other with only a south pole

What will happen when these magnets are brought close together?

Both magnets will turn to the left

Both magnets will turn to the right

What does a Capacitor do?

Primarily used to Amplify Voltage

Primarily used to Resist Voltage

The picture below shows a turbine generator used to produce electricity at a geothermal power plant. Electricity is produced by using steam to _____________.

reduce friction in the turbine generators

reduce emissions from the turbine generators

What is the job of the generator in a coal power plant?

To change mechanical energy into electrical energy

Use electrical energy to turn a turbine.

Convert electrical energy into mechanical energy

Turn the turbine which changes water into steam

The Law of Conservation of Energy states that...

energy can not be created or destroyed

energy can only be destroyed using the force

Which energy transformation is taking place in a flashlight?

Chemical → Electrical → Light

Electrical → Chemical → Light

Chemical → Light → Electrical

Circuits, Electromagnets, Motors and Generators

6th Grade

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Practice Problem

•

Medium

Used 158+ times

FREE Resource

40 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A ______ opens and closes a circuit.

power source

conductor

switch

output device

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Electricity is the flow of _________.

Protons

Neutrons

Electrons

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of these objects is an insulator?

Copper Wire

Paper Clip

Steel Pole

Rubber Gloves

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which one is a conductor?

wood

iron

plastic spoon

paper

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

The flow of electrical energy starts at the ___ side of the d-cell.

negative

positve

complete circuit

bulb

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which subatomic particle has a negative charge?

Proton

Neutron

Electron

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Metal is an example of this.

conductor

insulator

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40 questions

A ______ opens and closes a circuit.

Electricity is the flow of _________.

Which of these objects is an insulator?

Which one is a conductor?

The flow of electrical energy starts at the ___ side of the d-cell.

Which subatomic particle has a negative charge?

Metal is an example of this.

When all parts of the circuit are connected it is a ______ circuit.

a device that supplies electrical energy

a device that converts electrical energy into another form of energy

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