What is an electric circuit?
Circuits, electricity, and magnetism

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Physics
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9th - 12th Grade
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Hard
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1.
FLASHCARD QUESTION
Front
Back
An electric circuit is a closed loop that allows electric current to flow, consisting of a voltage source, conductors, and a load.
2.
FLASHCARD QUESTION
Front
What is the role of a voltage source in a circuit?
Back
A voltage source provides the electrical energy needed to push electrons through the circuit, creating current.
3.
FLASHCARD QUESTION
Front
What is the difference between a series circuit and a parallel circuit?
Back
In a series circuit, components are connected end-to-end, so current flows through each component one after another. In a parallel circuit, components are connected across common points, allowing current to flow through multiple paths.
4.
FLASHCARD QUESTION
Front
What happens to the current in a series circuit if one component fails?
Back
If one component fails in a series circuit, the entire circuit is broken, and no current flows.
5.
FLASHCARD QUESTION
Front
What happens to the current in a parallel circuit if one component fails?
Back
If one component fails in a parallel circuit, current can still flow through the other paths, so the circuit remains functional.
6.
FLASHCARD QUESTION
Front
What is resistance in an electrical circuit?
Back
Resistance is a measure of the opposition to the flow of electric current, typically measured in ohms (Ω).
7.
FLASHCARD QUESTION
Front
What is Ohm's Law?
Back
Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R): V = I × R.
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