CATEGORY: ELECTRIC CIRCUITS
This is a complete, unbroken path through which electric charges can flow.
What is an electric circuit?
All electrical devices contain these.
What are electric circuits?
Every magnet regardless of shape has two of these.
What are magnetic poles?
You can increase the strength of an electromagnet by adding these.
What are loops of wire?
Rubber is an example of this
Materials through which charge can flow easily are called this.
What are conductors?
This is the unit for the rate of current
What is an ampere?
Unlike magnetic poles do this to each other.
What is attract?
Both solenoids and electromagnets produce magnetic fields using these two things.
What are electric current and coiled wires?
Potential electric current can be converted into this.
What is heat?
When she added a second bulb and the first got dimmer, Lisa built this type of circuit.
What is a series circuit?
Batteries and power plants are both examples of these.
What are energy sources?
Earth's magnetic poles are NOT in the same place as these.
What are geographic poles?
The north and south poles of a solenoid change with this
What is the direction of the current?
The path of a current in a circuit is completed by these
What are conducting wires?
When more branches are added to this type of circuit, resistance decreases.
What is a parallel circuit?
Energy is always this in a circuit
What is conserved?
When magnetic fields of two or more magnets overlap, this type of magnetic field forms
What is a combined magnetic field?
You can also increase the strength of an electromagnet by using this for the core.
What is a stronger ferromagnetic material?
As Earth's magnetic poles move, this will change at a given location.
What is magnetic declination?
Resistance in a circuit equals voltage divided by this.
What is current?
This does NOT determine the resistance of a wire.
What is color?
The motion of liquid iron in Earth's outer core creates this.
What is a magnetic field?
his is a device with a magnetized needle that can spin freely.
What is a compass?
Iron filings can be used to do this to a bar magnet
What is map its magnetic field?