Magnets
WHERE ARE MAGNETS THE STRONGEST?
THE POLES
WHAT ARE THREE WAYS TO MAKE AN ELECTROMAGENT STRONGER?
ADD MORE LOOPS IN THE SOLENOID
ADD MORE VOLTAGE
ADD IRON CORE
A MOTOR TRANSFERS WHAT TYPE OF ENERGY?
A MOTOR TRANSFERS ELECTRICAL ENERGY INTO MECHANICAL ENERGY.
WHAT CREATES AN ELECTRIC FIELD?
MOVING ELECTRIC CHARGES.
HOW DO TWO LIKE POLES INTERACT WITH EACH OTHER?
LIKE POLES REPEL
EITHER POSITIVE-POSITIVE OR NEGATIVE-NEGATIVE
WHAT ARE THE THREE THINGS NEEDED FOR AN ELECTROMAGNET?
IRON CORE, LOOPS OF WIRE(SOLENOID), BATTERY(VOLTAGE)
WHAT TYPE OF ENERGY TRANSFER DOES A GENERATOR GO THROUGH?
A GENERATOR TRANSFERS MECHANICAL ENERGY TO ELECTRICAL ENERGY.
HOW IS A MAGNETIC FIELD INDUCED?
A MOVING ELECTRIC FIELD CREATES A MAGNETIC FIELD.
WHAT IS THE MAIN DIFFERENCE BETWEEN A BAR MAGNET AND AN ELECTROMAGNET?
A BAR MAGNET IS A PERMAMENT MAGNET WHERE AN ELECTROMAGNET IS A TEMPORARY MAGNET.
HOW COULD YOU CHANGE THE POLES OF AN ELECTROMAGNET?
CHANGE THE DIRECTION OF CURRENT.
WHAT ARE THE MAIN COMPONENTS FOR A MOTOR?
ROTOR, COMMUTATOR, BATTERY
THE SPEED YOU MOVE THE BAR MAGNET WILL BE PORPORTIONAL TO THE MAGNETIC STRENGTH.
WHAT ARE MAGNETIC DOMAINS? HOW DO YOU KNOW IF IT IS "MAGNETIZED"?
MAGNETIC DOMAINS ARE MAGNETICALLY ALIGNED ATOMS. IF ALL THE ARROWS POINT IN THE SAME DIRECTION THE OBJECT IS MAGNETIZED.
WHY IS THERE A MAGNETIC FIELD AROUND AN ELECTROMAGNET?
MAGNETIC FIELDS ARE CREATED BY MOVING ELECTRIC CHARGES. SINCE THERE IS A CURRENT IN THE SOLENOID WRAPPED AROUND THE IRON CORE THERE IS AN INDUCED MAGNETIC FIELD.
IN ORDER FOR THE MOTOR TO DO WORK WHAT MUST BE ATTACHED?
A SHAFT WHICH WOULD BE USED TO TAKE THE ROATIONAL ENERGY AND USE IT FOR SOMETHING.
THE PROCESS OF GENERATING A CURRENT IN A CIRCUIT BY MOVING A WIRE THROUGH A MAGNETIC FIELD IS CALLED?
ELECTROMAGNETIC INDUCTION.
THE NORTH SIDE IS ATTRACTED TO MAGNETIC SOUTH AND THE SOUTH SIDE IS ATTRACTED TO MAGNETIC NORTH.
HOW WOULD YOU MAKE AN ELECTROMAGNET.
WRAP COILS AROUND AN IRON CORE. CONNECT IT TO A BATTERY. THE MORE COILS THE GREATE THE MAGNETIC STRENGTH OF THE ELECTROMAGNET.
WHAT ARE THE COMPONENTS THAT ARE FOUND IN BOTH DC MOTORS AND GENERATORS?
STATORS, ARMETURE, COMMUTATOR
A BATTERY WILL ONLY BE FOUND IN MOTORS. NOT GENERATORS.
The force produced by a current carrying wire and a magnetic field is greatest at what
angle? __________ Nonexistent (zero) at what angle? ___________
GREATEST AT 90 DEGREES. AND NON EXISTENT AT 0 DEGREES.