Electricity
Define electricity.
The interactions between electrons and other charged particles.
What is the unit of current?
Ampere (a)
Ohm's law explains the relationship between what 3 things?
Current, voltage, resistance
What is the region around a magnet called, in which other objects are affected by magnetism?
Magnetic field
What is the slight difference called, between geographical and magnetic north?
Angle of declination
TOWARDS the negatively charged region (they represent the movement of + charge)
What is the unit of voltage?
Volt (V)
According to ohm's law, what will happen to the voltage if you increase the current in a circuit?
It will increase
How do you create an electromagnet?
Run a current/conductor through a magnetic field.
Law of Electric Charges is to electricity, as ________ is to magnetism
Law of Magnetic Poles
What are the 2 methods of transferring electric charge?
Induction, conduction
What is the unit of resistance?
Ohm (Ω)
Current will decrease
Geographic north has a _____ magnetic pole.
South
What are 2 benefits of the magnetosphere?
Navigation + Protection from solar wind
Materials through which electric currents flow easily are called ____, whereas materials that do not allow easy current flow are ____.
Conductors - Insulators
V
I - R
I = ?
R = 200 Ω
V = 240 V
I = 1.2a
What causes magnetic force?
The rotation of electrons around a nucleus
Law of Magnetic Force is to magnetism as ________ is to electricity
Coulomb's Law
What are the 3 important parts of a circuit?
Power source - Load - Conductors
What does a coulomb measure?
SI unit of electric charge
What is the resistance in a circuit if a potential difference of 110V causes a current of 10 A?
11 Ω
Please draw the domain of a magnetic material
(Should include domains, just not lined up)
What are the 3 methods of magnetizing an object?
Induction, conduction, electricity