Electrical Resistance: A Beginner's Guide
Science Chapter 4
Electricity and
Magnetism
An object that
does NOT
conduct
electricity…
insulator
The measure of how
much a material
opposes the flow of
current…
resistance
A circuit that has
only one path that
electricity can
follow…
series circuit
The build up of
charges on an
object…
static electricity
An object that
allows electricity
to flow…
conductor
A temporary
magnet made up
of a wire wrapped
around a core…
electromagnet
A circuit that has
two or more
paths that
electricity can
follow…
parallel circuit
The space in
which an
electrical force
acts…
electric field
A student added another light to an
electrical circuit and all the lights
became dimmer. What is most
likely the cause of the dimmer
lights?
The circuit is a series circuit.
If one burned out bulb
causes all of the lights
to fail in a circuit, what
might you conclude?
It is a series circuit.
Which of these
materials makes a
good insulator of
electricity?
Plastics
Salt water
Aluminum foil
silver
plastics
Which statement
is TRUE about an
electromagnet?
•
It is a permanent magnet.
•
Increasing the number of coils decreases the strength.
•
It cannot be turned off.
•
It is made by wrapping current carrying wire around an
iron core.
It is made by wrapping current
carrying wire around an iron
core.
Which is a
characteristic of
most electrical
conductors?
•
They can be cut easily.
•
Positive charges move easily
through them.
•
Negative charges move easily
through them.
•
They are soft and flexible.
Negative charges
move easily
through them.
What is a property of
matter that causes
objects to attract or
repel each other?
electric charge
Dive deep into the concept of electrical resistance, its impact on current flow, and key factors affecting it. Explore practical examples and troubleshooting scenarios for a comprehensive understanding.
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Presentation Transcript
The measure of how much a material opposes the flow of current
A student added another light to an electrical circuit and all the lights became dimmer. What is most likely the cause of the dimmer lights?
If one burned out bulb causes all of the lights to fail in a circuit, what might you conclude?
It is made by wrapping current carrying wire around an iron core. It is a permanent magnet. Increasing the number of coils decreases the strength. It cannot be turned off. It is made by wrapping current carrying wire around an iron core.
Negative charges move easily through them.
What is a property of matter that causes objects to attract or repel each other?
