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What is a parallel circuit?
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A parallel circuit is a type of electrical circuit in which there are multiple paths for electricity to flow, allowing components to be connected separately across two points.
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What happens to the total resistance in a parallel circuit?
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The total resistance in a parallel circuit is always less than the smallest individual resistance because the paths increase, allowing more current to flow.
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How is current distributed in a parallel circuit?
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In a parallel circuit, the total current is the sum of the currents through each path. Each component receives the full current flowing through its branch.
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How is voltage distributed in a parallel circuit?
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In a parallel circuit, the voltage across each component is the same and is equal to the source voltage.
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What happens if one branch of a parallel circuit is disconnected?
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If one branch is disconnected in a parallel circuit, the other branches continue to function as paths for current remain unaffected.
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How do you calculate total resistance in a two-resistor parallel circuit?
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For two resistors R1 and R2 in parallel, the total resistance Rt is calculated using 1/Rt = 1/R1 + 1/R2.
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Give an example of devices connected in parallel in a home.
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Household appliances like lights and electrical outlets are typically connected in parallel so that they can operate independently.
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Why is it safer to have circuits in parallel in homes?
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Parallel circuits allow each appliance to have the same voltage and flexibility to operate independently, making it safer and more convenient.
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How do you find the total resistance if there are three resistors in parallel?
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For three resistors, the total resistance Rt is found using 1/Rt = 1/R1 + 1/R2 + 1/R3.
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Is the total current in a parallel circuit the same or different as that from each branch?
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Each branch of a parallel circuit carries a portion of the total current, which accumulates to equal the total current flowing into the circuit.
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What typically causes overloads in a parallel circuit?
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Overloads occur when too many devices are connected, increasing the total current beyond safe levels, risking circuit damage and fires.
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What devices typically use parallel circuits?
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Devices such as TVs, computers, and kitchen appliances use parallel circuits.
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Why is the voltage the same across components in a parallel circuit?
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Because each component connects directly across the voltage source, ensuring they each receive the same potential difference.
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How does the addition of more paths affect current in a parallel circuit?
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Adding more paths can enable more current to flow, reducing the total resistance of the circuit.
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How can a bulb in a room remain lit when others are turned off?
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Bulbs are connected in parallel, and this independent connection allows others to remain on even if one goes out.
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