Download Current and Resistance

Survey
yes no Was this document useful for you?
   Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Carbon nanotubes in interconnects wikipedia, lookup

Energy harvesting wikipedia, lookup

Energy applications of nanotechnology wikipedia, lookup

Nanogenerator wikipedia, lookup

Solid wikipedia, lookup

Semiconductor wikipedia, lookup

Electricity wikipedia, lookup

Transcript
Physical Science
Mr. Barry
 Electric
current (I)
: the net movement
of electric charges
in a single
direction
 Measured in
Amperes (A)
 Electric
current flows
through a closed path
called a circuit
 Voltage
Difference (or
Potential Difference,
or Voltage) is the
ability to move an
electric charge
through a resistance
 Voltage Difference is
measured in Volts (V)
 Increasing
the Voltage difference in a
circuit will cause more current to flow
A
battery is a device
that stores chemical
energy and makes it
available as
electrical energy
 A battery can
provide the voltage
difference in a circuit
 Resistance: the
tendancy of a material to
oppose the flow of electrons
R Measured in Ohms – Ω
 Resistance changes electrical energy into
thermal energy and light
 Insulators
have more
resistance than
conductors
 Thinner wires have more
resistance
 Longer wires have more
resistance
 Hotter wires have more
resistance