Magnetism
The three metals that make up magnets
What are iron, nickel and cobalt?
A circuit in which all parts are connected in one single loop.
What is a series circuit?
Current.
What is the rate at which a charge passes a given point? The higher the current is, the more charge passes the point each second.
Ohm's law.
What is I=V/R?
Determines if an object has charge.
What is an electroscope?
Naturally magnetic rock.
What is magnetite?
A circuit in which different loads are located on separate branches.
What is a parallel circuit?
The unit for current.
What are amps or appears?
What do the letters in Ohm's law stand for?
What is I=Current V=potential difference R=resistance?
Transferring of electrons from one object to another by direct contact.
When charges in an uncharged object are rearranged without direct contact with a charged object.
What is conduction?
What is Induction?
An example of this is a string of paper clips magnetized by one clip attracted to a magnet.
What is induced magnetism?
A complete closed path which electric charges flow.
What is an electric circuit?
In this, the charges always flow in the same direction.
What is direct current?
Formula for electrical energy.
What is P x T?
A material where charges can move easily.
A material where charges can not move easily.
What is a conductor?(copper, metals)
What is an insulator?(Plastic, class, wood)
The opposite ends of a magnet.
What are magnetic poles? (North and south)
A device that uses electrical energy to do work.
What is a load?
In this the charges continually switch from flowing in one direction to flowing in the reverse direction.
What is alternating current?
Electrical power is measured in....
What is a Wtt or a Kilowatt?
The buildup of electric charges of an object.
What is static electricity? (hair on a ballon)
_____ poles attract each other
_____ poles repel each other
Parts of a circuit.
What are the energy source, wires and a load? The energy source could be a battery, a photocell, a thermocouple or an electric generator at a power plant. Wires connect all the parts of the circuit together. They are made of low resistance conducting materials such as copper. The loads changes electrical energy into other types of energy such as thermal, light or mechanical. Some examples of loads are light bulbs and appliances
The difference in energy per unit charge as a charge moves between two points in the path of a current.The higher this is the more energy released.
What is voltage?
Electrical energy is measured in..
What are Kilowatts per hour?
A device that produces an electric current by converting chemical energy into electrical energy. Give examples of dry and wet.
What is a cell? Wet- Car battery sulfuric acid. Dry- battery