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U2L2 electric current (video 1 & 1 cont. (types of electric current…
U2L2 electric current
video 1 & 1 cont.
flows through wires
is the rate of electric charges
measured in amps
standard amps in us is 120 amps
types of electric current
dc (direct current)
charges always flow in the same direction
current in batteries
ac (alternating current)
charges change direction
change direction 120 times a second
video 2
voltage
is the amount of work required to move each unit between two points
resistance
is the opposite of voltage
expressed in HMS
resistance vs voltage
voltage
pushes electric charges through a wire
resistance
slows charges down
