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Questions and Answers
An electric circuit strictly requires both a power source and a conductive pathway for operation.
An electric circuit strictly requires both a power source and a conductive pathway for operation.
True (A)
The core components of an electric circuit invariably include a power source, conductors, a load, and a commutator.
The core components of an electric circuit invariably include a power source, conductors, a load, and a commutator.
False (B)
A switch in a circuit is designed to either completely open or completely close the circuit, controlling the flow of electricity.
A switch in a circuit is designed to either completely open or completely close the circuit, controlling the flow of electricity.
True (A)
In circuit diagrams, a light bulb is symbolically represented by a stylized sine wave.
In circuit diagrams, a light bulb is symbolically represented by a stylized sine wave.
In a series circuit, the current is divided among the components, while in a parallel circuit, the voltage is divided.
In a series circuit, the current is divided among the components, while in a parallel circuit, the voltage is divided.
If one bulb fails in a series circuit, all the other bulbs will continue to light up without any change in brightness.
If one bulb fails in a series circuit, all the other bulbs will continue to light up without any change in brightness.
Voltage, a measure of electrical potential difference, is quantified using the unit known as the 'Watt'.
Voltage, a measure of electrical potential difference, is quantified using the unit known as the 'Watt'.
Common batteries, such as AA or AAA, typically provide a voltage of approximately 2.5 volts.
Common batteries, such as AA or AAA, typically provide a voltage of approximately 2.5 volts.
If a device receives voltage significantly higher than its rated voltage, it is likely to function more efficiently and have an extended lifespan.
If a device receives voltage significantly higher than its rated voltage, it is likely to function more efficiently and have an extended lifespan.
Battery-powered circuits primarily operate using Alternating Current (AC), which periodically reverses direction.
Battery-powered circuits primarily operate using Alternating Current (AC), which periodically reverses direction.
A capacitor's primary function in an electrical circuit is to dissipate energy in the form of heat.
A capacitor's primary function in an electrical circuit is to dissipate energy in the form of heat.
Ohm's Law describes the relationship between voltage, current, and impedance in an electrical circuit.
Ohm's Law describes the relationship between voltage, current, and impedance in an electrical circuit.
A short circuit always increases the overall resistance in an electrical system.
A short circuit always increases the overall resistance in an electrical system.
In a parallel circuit, adding more resistors will decrease the total resistance of the circuit.
In a parallel circuit, adding more resistors will decrease the total resistance of the circuit.
The term 'ground' in an electrical circuit refers to a path that provides infinite resistance to electrical current.
The term 'ground' in an electrical circuit refers to a path that provides infinite resistance to electrical current.
Increasing the length of a conductor will reduce its electrical resistance, allowing for easier current flow.
Increasing the length of a conductor will reduce its electrical resistance, allowing for easier current flow.
A transformer is a static device that efficiently converts DC voltage from one level to another.
A transformer is a static device that efficiently converts DC voltage from one level to another.
Kirchhoff's Current Law states that the total current entering a junction is less than the total current leaving the junction.
Kirchhoff's Current Law states that the total current entering a junction is less than the total current leaving the junction.
A diode primarily functions as a bidirectional conductor, readily allowing current flow in either direction.
A diode primarily functions as a bidirectional conductor, readily allowing current flow in either direction.
The power consumed by a resistor in a circuit can be calculated using the formula $P = I^2 * R$, where $I$ is the current and $R$ is the resistance.
The power consumed by a resistor in a circuit can be calculated using the formula $P = I^2 * R$, where $I$ is the current and $R$ is the resistance.
Flashcards
Electric Circuit
Electric Circuit
A closed loop that allows electric charge to flow continuously.
Main Circuit Components
Main Circuit Components
A source of voltage (battery), a conductive path (wires), and a load (bulb).
Function of a Switch
Function of a Switch
To open or close the circuit, controlling the flow of electricity.
Light Bulb Symbol
Light Bulb Symbol
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Series vs. Parallel Circuits
Series vs. Parallel Circuits
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Bulb Out in Series Circuit
Bulb Out in Series Circuit
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Unit to Measure Voltage
Unit to Measure Voltage
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Typical Battery Voltage
Typical Battery Voltage
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Too High Voltage Effect
Too High Voltage Effect
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Battery Powered Current
Battery Powered Current
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Study Notes
- An electric circuit is a closed loop that allows electric charge to flow continuously.
- The main components of an electric circuit are a power source, wires, and a load.
- A switch controls the flow of electricity in a circuit by opening or closing the circuit.
- The symbol for a light bulb in a circuit diagram is a circle with a cross inside.
- In a series circuit, components are connected along a single path, while in a parallel circuit, components are connected along multiple paths.
- If one bulb goes out in a series circuit, the entire circuit is broken, and all bulbs go out.
- Voltage is measured in volts (V).
- One battery usually has 1.5 volts.
- If the voltage is too high for a device, it can damage the device.
- DC (direct current) flows in a battery-powered circuit.
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