Electric Charge/Static Electricity
a property that leads to electromagnetic interactions between the particles that make up the matter
what is electric charge
rate of low of electric charges
what is an electric current?
a complete closed path through which electric charges can flow
What is an electric circuit?
any material that attracts iron or objects made of iron
What is a magnet?
results when electric currents and magnetic field interact with each other
what is electromagnetism?
the charge of two objects and the distance between the objects
What affects the electric force between two objects?
the charge moves in different directions. DC in 1 one direction and AC alternates direction.
what is the difference between direct currents and alternating currents?
converts some type of energy into chemical energy (battery, solar cell, power plant)
what is an energy source
When you bring two magnets together, they exert a push or a pull called this
What is magnetic force?
A coil of wire that carries an electric current and produces a magnetic field
What is a solenoid
when they gain or lose electrons by friction, contact, or induction.
How can an object become charged?
the units in which electric currents are measured
What are amperes - symbol A?
material where electric charges can move easily (copper and most metals)
what is an electrical conductor?
two magnets cab push each other apart because of their ends, which are called?
What are magnetic poles?
wrapping a solenoid around an iron core
What is electromagnet
the buildup of electric charge on an object
what is static electricity?
voltage and resitance
What are the two factors that affect electric current?
a device that uses electrical energy to operate. (light bulb, tv, computer, radio)
What is a load?
the area surrounding a magnet where magnetic forces can be detected
What is a magnetic field?
lift metal objects, measure electric current, a doorbell, hair dryers, & speakers
What are some uses of electromagnets?
a material that allows charge to move freely and a material through which charges cannot move easily
what is the difference between an electrical conductor and an electrical insulator
What affects electrical resistance?
energy source, electrical conductor, and load - most have more than one load
What are the three basic parts needed to make a electric circuit?
in what direction do the magnetic field lines travel?
contains an electromagnet that changes electrical energy into mechanical energy
what is an electric motor