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Section 2:Electric Current (resistance (init of resistance is in ohms,…
Section 2:Electric Current
Electric current
source of electric energy
In electric circuits this charge is often carried by moving electrons in a wire
Measured in amperes
Circuit
A closed conducting loop where electric charges flow continously
water circuit
a pump increases the gravitational potential energy of the water
water moves above earth as it is pumped
A path in which electrons flow from a voltage or other source
resistance
init of resistance is in ohms
measure of how difficult it is for electrons to flow
an electric quantity that measures how the device or material reduces the electric current flow through it.
Resistance is increased in pipe when the pipe is thinner so the water flow is decreased
voltage
electrical potential energy of a battery
measured in volts
measure of how much electrical potential energy each electron can gain
battery
includes positive and negative terminals
supplies energy to an electrical circuit
Electrons are negatively charged so in a battery they are repelled by the negative end
Whe the battery is hooked up to something that lets the electrons flow through it, they flow from negative to positive