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Electric Current

3 components of a circuit 1. voltage difference (battery, outlet) 2. device (i.e. lightbulb, appliance) 3. conductors (wires)
amperes what electric current is measured in
charge flow electric charges flow from higher voltage to lower voltage
circuit a closed path that electric current follows
electric current the net movement of electric charges in a single direction
Ohm's Law current (I) in a circuit equals the voltage difference (V) divided by the resistance (R) I= V/R
ohms what resistance is measured in
open circuit when any part of a series circuit is disconnected, no current flows through the circuit
parallel circuit circuit that contains two or more branches for current to move through
resistance the tendency for a material to oppose the flow of electrons, changing electrical energy into thermal energy and light
series circuit circuit that contains only one loop to flow through
simple electric circuit closed path contains a source of voltage difference, a device, and conductors
volt what voltage difference is measured in
voltage difference -the force that causes electric charges to flow -measured in volts
what INCREASES resistance when a wire is longer and thinner
closed circuit a complete electrical circuit through which current can flow when a voltage is applied
law of conservation of charge electric charge can neither be created nor destroyed in a closed system, the amount of charge remains the same
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