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Questions and Answers
In a parallel circuit, how does adding another identical bulb affect the voltage across each bulb?
In a parallel circuit, how does adding another identical bulb affect the voltage across each bulb?
- The voltage across each bulb doubles.
- The voltage across each bulb increases, but not necessarily doubles.
- The voltage across each bulb remains the same. (correct)
- The voltage across each bulb decreases.
If a third identical bulb is added in parallel to two bulbs already in parallel, how will the total current supplied by the battery change?
If a third identical bulb is added in parallel to two bulbs already in parallel, how will the total current supplied by the battery change?
- The total current will drop to zero.
- The total current will remain the same.
- The total current will decrease.
- The total current will increase. (correct)
A circuit contains a battery and a single bulb. If a second identical bulb is added in parallel, what happens to the battery's lifespan, assuming constant usage?
A circuit contains a battery and a single bulb. If a second identical bulb is added in parallel, what happens to the battery's lifespan, assuming constant usage?
- The battery lifespan remains the same.
- The battery lifespan increases.
- The battery lifespan decreases. (correct)
- The battery lifespan doubles.
What is the primary difference between a series circuit and a parallel circuit in terms of voltage distribution?
What is the primary difference between a series circuit and a parallel circuit in terms of voltage distribution?
A parallel circuit contains two bulbs. If one bulb burns out, what happens to the other bulb?
A parallel circuit contains two bulbs. If one bulb burns out, what happens to the other bulb?
Consider a parallel circuit with multiple resistors. If the resistance of one branch is significantly increased, what happens to the current flowing through that branch?
Consider a parallel circuit with multiple resistors. If the resistance of one branch is significantly increased, what happens to the current flowing through that branch?
How does adding more parallel branches to a circuit affect the overall resistance of the circuit, and how does this impact the total current drawn from the power source?
How does adding more parallel branches to a circuit affect the overall resistance of the circuit, and how does this impact the total current drawn from the power source?
In a parallel lighting system, why is it advantageous to connect lights in parallel rather than in series?
In a parallel lighting system, why is it advantageous to connect lights in parallel rather than in series?
Flashcards
Bulbs in Parallel
Bulbs in Parallel
Each bulb receives the same voltage, and they glow equally as bright as a single bulb.
Simple Circuit
Simple Circuit
A closed loop that allows electric current to flow continuously.
Parallel Bulb Brightness
Parallel Bulb Brightness
Adding a bulb in parallel won't affect the brightness of the existing bulb. Each bulb gets the same voltage.
Switch
Switch
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Study Notes
- A basic circuit consists of a battery, a bulb, and a switch, connected by wires.
- Closing the switch allows electric current to flow, lighting up the bulb.
- Adding another bulb in parallel doesn't change the brightness of the bulbs.
- With two bulbs in parallel, each receives the same voltage upon closing the switch.
- This arrangement makes both bulbs glow equally bright, similar to the brightness of a single bulb circuit.
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