BRENNAN CHAPTER 13 STUDY GUIDE ANSWERS – Flashcards
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Electric circuit
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Any complete path through which electricity travels
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Electric Current
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The flow of electric charge
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Conductor
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A material that easily carries electrical current
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Insulator
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Opposite of conductor
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Switch
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Turns electricity on and off
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Voltage
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Measure of electric potential energy
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Closed Circuit
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Circuit w/ complete path of current flow
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Open Circuit
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No current can flow
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Ohm's Law
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More resistance less current
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Amps
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A unit of electric current equal to a flow of one coulomb per second
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Multimeter
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Instrument used to measure, current, voltage, and resistance
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Potentiometer
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Variable resistor
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Circuit Diagrams
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Drawing of an electric circuit
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Resistor
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Electrical device w/ a fixed resistance
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Resistance
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The measure of an objects ability to conduct electrical current measure of ohms
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The difference between open and closed circuits?
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Closed circuit- current can flow Open circuit- No current can flow
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How is energy supplied in a circuit?
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Energy is supplied in the wires
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What are the signs for a circuit diagram?
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What are the signs for a circuit diagram?
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To measure current and voltage in a diagram-
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you use a multimeter
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What is the function of a battery in a circuit?
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This brings power to an electrical circuit
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What is the unit for current?
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Amps (A)
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What is the unit for voltage?
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Volts (V)
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What is the unit for resistance?
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Ohms (insert ohm sign here)
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How do you apply Ohm's Law
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I=V/R (current) = (voltage) / (resistance)
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What is the relationship between current and voltage?
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The relationship between voltage, current, and resistance is described by Ohm's law.
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What is the relationship between current and resistance?
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Defines the relationship between the voltage, current, and resistance in an electric circuit: I = V/R
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Can you classify conductors and insulators?
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Conductors= metal Insulators= anything else
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Describe resistors
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high resistance= harder for electricity to get through low resistance= easier for electricity to get through A simple explanation of how resistors reduce a flow of electricity and the different jobs they do in electronic circuits
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What is the electrical flow in a circuit?
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There is different changes in energy in different spots in a circuit.
