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Circuits

Physics Final Review

QuestionAnswer
In a series circuit, electrons only have one what? Path to flow
What is constant in a series circuit? Current
Total voltage in a series circuit is what? Added
Total resistance in a series circuit is what? Added
In a parallel circuit, each branch has what? Its own path and current
What is constant in a parallel circuit? Voltage
Total current in a parallel circuit is what? Added
Total 1/resistance in a parallel circuit is what? Added 1/resistance
How do you measure current using an ammeter? Insert/ connect to the series circuit so that the electrons flow through the meter to measure the current
How do you measure voltage using a voltmeter? Place across a resistor
Define voltage A force that pushes the current through the circuit
What is the unit of voltage? Volts (V)
Define current The actual substance that is flowing through the wires of the circuit
What is the unit of current? Ampere/ Amps (A)
Define resistance Friction that impedes the flow of current through the circuit
What is the unit of resistance? Ohms
What does DC stand for? Direct current
What does AC stand for? Alternating Current
In a direct current, how do electrons flow? A single direction
In an alternating current, how do electrons flow? Back and forth
What is DC good at? Powering most modern, electrical devices
What is DC bad at? Transmitting power across long distances
What is AC good at? Transmitting power across long distances
What is AC bad at? Powering most modern, electrical devices
What do power companies charge you based on? Kilowatts
How is voltage provided? A battery
What is the unit of power? Watts
What must be present in order for current to flow in a circuit? A battery/ voltage, conductor, and resistor
What is the purpose of a fuse? To break the circuit in case there is too much current
What happens if a circuit is open? Current cannot flow
What happens if a circuit is closed? Current can flow
In a series circuit, what happens to the brightness of the bulbs as more as added to the circuit? It gets dimmer
In a parallel circuit, what happens to the brightness of the bulbs as more as added to the circuit? It stays the same
Created by: nynystylz
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