P2- TOPIC 1 : STATIC AND CURRENT ELECTRICITY

mathilde_ndoye
Flashcards by mathilde_ndoye, updated more than 1 year ago
mathilde_ndoye
Created by mathilde_ndoye about 7 years ago
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Flashcards on P2- TOPIC 1 : STATIC AND CURRENT ELECTRICITY, created by mathilde_ndoye on 11/17/2014.

Resource summary

Question Answer
ATOMS HAVE WHAT PROTONS NEUTRONS ELECTRONS
WHAT IS THE RELATIVE CHARGE OF PROTON NEUTRON ELECTRON PROTON = +1 NEUTRON = 0 ELECTRON = -1
WHAT IS THE RELATIVE MASS OF THESE PROTON= 1 NEUTRON =1 ELECTRON = NEGLIGIBLE
INSULATORS CAN BE CHARGED BY WHAT ? FRICTION
WHAT CAN SOME MATERIALS DO BETTER THAN OTHERS HOLD ELECTRONS - SOME HOLD EASILY OTHERS LOOSE EASILY
WHAT DO METALS DO IN TERMS OF ELECTRONS THEY CONDUCT
LIKE CHARGES …. REPEL
CAN PROTONS BE TRANSFERRED EXPLAIN YOUR ANSWER NO THEY CANNOT ….. BECAUSE THEY ARE FIXED IN THE NUCLEUS OF ATOMS
WHAT HAPPENS WHEN A MATERIAL GAINS ELECTRONS IT BECOMES NEGATIVLEY CHARGED
IF A MATERIAL LOOSES ELECTRONS ….. IT IS LEFT WITH AN EQUAL POSITIVE CHARGE
EXPLAIN EARTHING WHEN ELECTRONS MOVE FROM YOU TO GET TO THE EARTCH
HOW CAN YOU AVOID DANGER WHEN DEALING WITH STATIC ELECTRICITY PROVIDE THE ELECTRICITY WITH A PATH TO THE GROUND … THIS STOPS ANY SPARKS FROM CAUSING A FIRE
WHAT MUST ALL AIRCRAFTS DO ? CONNECT THE PLANE TO THE GROUND WHEN REFUELING. THIS STOPS ANY SPARKS FROM CAUSING A FIRE
EXPLAIN WHY STATIC IS USEFUL FOR PAINTING AND CROP SPRAYING ALLOW THAT PRODUCT TO STICK TO THE MATERIAL YOU ARE SPRAYING
HOW DOES THIS WORK WITH PAINTING- - CONNECT THE PAINT SPRAY NOZZEL TO A POSITIVE TERMINAL -THE PAINT DROPLETS THEN PICK UP THESE POSITIVE ELECTRONS -THE POSITIVLY CHARGED PAINT DROPLETS REPEL EACH OTHER -GIVE THE OBJECT A NEGATIVE CHARGE AND THE CHARGE DROPLETS ARE ATTRACTED TO THIS
EXPLAIN AN ELECTRIC CURRENT THE RATE OF FLOW OF CHARGE
WHAT DOES THIS MEAN HOW MUCH CHARGE FLOWS PER SECOND
WHAT IS THE CURRENT IN METALS A FLOW OF ELECTRONS
EXPLAIN ELECTRONS IN A CURRENT ELECTRONS ARE FREE TO MOVE BUT NOT PROTONS THESE ARE' LOCKED AWAY' IN THE NUCLEUS…..
*NEGATIVE CHARGES FLOW FROM ONE TERMINAL AND ARE ATTRACTED TOWARDS THE POSITIVE TERMINAL * :)
WHAT DOES DC STAND FOR ? DIRECT CURRENT - FOLLOW ONE DIRECTION
A.C ALTERNATING CURRENT CHANGES DIRECTIONS
CHARGE = CURRENT x TIME FORMULA WILL BE IN EXAM
THE ATOMIC NUMBER IS ______ THE NUMBER OF PROTONS
HOW MANY NEUTRONS ARE THERE THEN + EXPLAIN HOW TO WORK IT OUT 27 - 13 (MASS NUMBER - NMBER OF PROTONS ) NUMBER OF NEUTRONS = 13
IF THERE ARE 13 PROTONS HOW MANY ELECTRONS 13
WHAT ARE ROWS AND COLUMNS CALLED ? PERIODS GROUPS
PERIODS GO IN ORDER OF ATOMIC MASS AND ... GROUPS IN SIMILAR PROPERTIES
DEFINE AN ISOTOPE ATOMS OF AN ELEMENT WITH THE SAME NUMBER OF PROTONS BUT WITH DIFFERENT NUMBERS OF NEUTRONS
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