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Electric circuits
- electric charge
- insulating materials
become electrically
charged when are rubbed
together
- A substance that gains electrons
becomes negatively charged
- while a substance that loses
electrons becomes positively
charged.
- while a substance that loses
electrons becomes positively
charged.
- insulating materials
become electrically
charged when are rubbed
together
- Attraction &
repulsion
- Two negative charges placed near
each other will repel each other, and
so will two positive charges.
- If they have opposite
charges they will attract
each other.
- If they have opposite
charges they will attract
each other.
- Electrically charged objects
can attract small uncharged
objects that are close to
them
- Two negative charges placed near
each other will repel each other, and
so will two positive charges.
- Metals
- Metal atoms release some
of their electrons
- these electrons are free to
move through the structure of
the metal.
- This is why metals are good
conductors of electricity.
- This is why metals are good
conductors of electricity.
- these electrons are free to
move through the structure of
the metal.
- Metal atoms release some
of their electrons
- Current
- Strength of an electric
current is measured in Amps
- Amps= Watts /
Volts
- Amps are a measure of how much electric
charge is flowing around the circuit
- Amps= Watts /
Volts
- Strength of an electric
current is measured in Amps
- Types of circuits
- Series
- closed circuit in which
the current flows in one
path
- the current through each load
is the same & the total voltage
across the circuit is the sum of
the voltages across each load
- the current through each load
is the same & the total voltage
across the circuit is the sum of
the voltages across each load
- closed circuit in which
the current flows in one
path
- Parallel
- circuit is divided into
2 or more paths
- circuit is divided into
2 or more paths
- Series
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