Parallel Circuits Flashcards
(25 cards)
What is a parallel circuit?
A circuit where components are connected alongside each other, providing multiple paths for current to flow.
True or False: In a parallel circuit, if one component fails, the other components will also stop working.
False
Fill in the blank: In a parallel circuit, the total current is the ________ of the currents through each component.
sum
What happens to the total resistance in a parallel circuit as more branches are added?
The total resistance decreases.
Which of the following is a characteristic of parallel circuits? (A) Same current through all components (B) Same voltage across all components (C) Components are in a single loop
B
What is the formula for calculating total resistance (R_total) in a parallel circuit?
1/R_total = 1/R1 + 1/R2 + 1/R3 + …
True or False: Voltage across each component in a parallel circuit is the same.
True
What happens to the brightness of bulbs in a parallel circuit if additional bulbs are added?
The brightness of each bulb remains the same.
Fill in the blank: In a parallel circuit, the voltage supplied by the battery is ________ across each branch.
the same
What is one advantage of using parallel circuits over series circuits?
If one component fails, the others continue to operate.
If three resistors of 4 ohms each are connected in parallel, what is the total resistance?
1.33 ohms
True or False: In a parallel circuit, the total current is divided among the branches.
True
What is the main difference between series and parallel circuits?
In series, components are connected end-to-end; in parallel, they are connected across the same voltage source.
Which type of circuit is commonly used in household wiring?
Parallel circuit
Fill in the blank: In a parallel circuit, the current can be calculated using ________ for each branch.
Ohm’s Law
What will happen to the total current if more branches are added in a parallel circuit?
The total current will increase.
Which of the following statements is true about parallel circuits? (A) They are less complex than series circuits (B) They can be used for multiple devices (C) They always have the same resistance
B
What is the effect on total current when the resistance of one branch in a parallel circuit is decreased?
The total current increases.
True or False: The total voltage in a parallel circuit is the sum of the voltages across each branch.
False
What is the relationship between current and resistance in a parallel circuit according to Ohm’s Law?
Current is inversely proportional to resistance.
Fill in the blank: The total power in a parallel circuit is the ________ of the power consumed by each component.
sum
What happens to the current in a branch if the resistance in that branch is reduced?
The current in that branch increases.
In a parallel circuit with a 12V battery and two 6-ohm resistors, what is the current flowing through each resistor?
2 Amps
What type of circuit allows for devices to be controlled independently?
Parallel circuit
