Electric and Magnetic Fields
These are the two regions of a magnet where the magnetic force is strongest.
What are magnetic poles?
This type of current flows only in one direction.
What is direct current?
This component resists the flow of electric current in a circuit.
What is a resistor?
This device uses electrical energy to cause motion.
What is a motor?
This is the unit used to measure electrical resistance.
What is an ohm?
This field surrounds a magnet and has two ends called north and south.
What is the magnetic field?
This type of current changes direction periodically.
What is alternating current?
A material that allows electric current to flow through it easily.
What is a conductor?
This device converts mechanical energy into electrical energy.
What is a generator?
This term refers to the difference in electric potential between two points in a circuit.
What is potential difference?
This field is created around a charged object and can push or pull other charged objects.
What is the electric field?
The unit of measurement for electrical current.
This material does not allow electric current to flow through it easily.
What is an insulator?
This is a type of magnet created by running electric current through a wire.
What is an electromagnet?
This process occurs when a changing magnetic field induces an electric current in a conductor.
What is induction?
This term describes the alignment of atoms within a material that creates a magnetic effect.
The rate that electrical energy is used or produced in a circuit.
What is power?
The total resistance in a circuit when all resistors are connected in the circuit.
What is equivalent resistance?
In this type of circuit, there are multiple paths for the current to travel.
What is a parallel circuit?
This term refers to the opposition to the flow of current in a circuit, while this unit measures how much current flows.
This happens when a moving magnetic field creates an electric current.
What is electromagnetic induction?
This is the unit used to measure electrical potential difference or "voltage."
What is a volt?
This device can either increase or decrease the voltage in an alternating current circuit.
What is a transformer?
The type of circuit that only has one path for the current to flow. If the path is broken, no current can flow.
What is a series circuit?
This term refers to the rate at which electrical energy is used in a circuit, while this unit measures electrical potential difference.
What is power and volt?