A voltage divider circuit uses two resistors in series to divide the input voltage into smaller voltages. The output voltage is proportional to the ratio of the resistances, making it useful for obtaining specific voltage levels.
What is the current division rule used for?
A Dividing voltage
B Dividing current
C Dividing impedance
D Dividing power
The current division rule helps in determining how current is divided among parallel resistors. The current divides inversely proportional to the resistance of each branch, with higher resistance branches receiving less current.
In a series circuit, how is the total voltage related to the individual voltages across components?
A Total voltage equals the sum of individual voltages
B Total voltage is zero
C Total voltage is equal to current
D Total voltage is constant
In a series circuit, the total voltage is equal to the sum of the individual voltages across each component. This is because the same current flows through all components, and the voltage drops are additive.
What happens to the total resistance in a series circuit as more resistors are added?
A Decreases
B Remains constant
C Increases
D Becomes zero
In a series circuit, adding more resistors increases the total resistance. The total resistance is the sum of all individual resistances, so the more resistors there are, the higher the total resistance.
What is the characteristic of the current division rule in a parallel circuit?
A Current divides equally
B Current divides inversely proportional to resistance
C Current remains constant
D Current divides proportionally to voltage
The current division rule states that in a parallel circuit, the current divides inversely proportional to the resistance of each branch. The branch with higher resistance will have less current flowing through it.
What is the primary goal of network synthesis in electrical circuits?
A Maximum power
B Reduce voltage
C Simplify complex circuits
D Minimize current
Network synthesis involves creating a simpler equivalent circuit that behaves the same as a complex network. This is achieved by selecting appropriate components like resistors, capacitors, and inductors to represent the behavior of the original circuit.
What is the equivalent resistance of two resistors in series?
A Sum of resistances
B Average of resistances
C Difference of resistances
D Reciprocal of resistances
In a series circuit, the total or equivalent resistance is the sum of the individual resistances. This is because the current encounters the full resistance of each component, adding up the total opposition to the current.
How is the total current divided in a parallel circuit?
A Equal among all branches
B Inversely proportional to resistance
C Proportional to resistance
D Inversely proportional to voltage
In a parallel circuit, the current divides inversely proportional to the resistance of each branch. A branch with lower resistance will carry more current, while a branch with higher resistance will carry less current.
How does network synthesis help in the design of filters?
A Increases impedance
B Simplifies component selection
C Reduces complexity
D Maximizes power transfer
Network synthesis simplifies the design of filters by reducing the complexity of the circuit. It allows engineers to create equivalent circuits that filter specific frequencies, making the design process easier and more efficient.
What is the result of applying the voltage division rule to a series circuit?
A Voltage remains the same
B Voltage is equally divided
C Voltage is divided according to capacitance
D Voltage is divided according to resistance
In a series circuit, the voltage division rule states that the voltage is divided across resistors in proportion to their resistances. Larger resistances will have a higher voltage drop across them, while smaller resistances will have less voltage drop.
What happens to the current when two resistors are connected in parallel?
A It increases
B It remains constant
C It decreases
D It becomes zero
In a parallel circuit, the total current increases as more branches are added because each additional branch provides an alternate path for the current to flow through, reducing the overall resistance.
What is true about the voltage across each resistor in a parallel circuit?
A Different
B Zero
C Proportional to current
D The same
In a parallel circuit, the voltage across each resistor is the same because each resistor is directly connected to the voltage source. This is a key characteristic of parallel circuits.
What is the equivalent resistance of two resistors in parallel?
A The difference between resistances
B The sum of resistances
C The product divided by the sum
D The average of resistances
For two resistors in parallel, the total or equivalent resistance is given by the formula 1/R_total = 1/R1 + 1/R2. The product divided by the sum of the individual resistances gives the correct total resistance.
How does current division apply to resistors in parallel?
A Current remains constant
B Current divides according to resistance
C Current divides based on power
D Current divides according to voltage
In a parallel circuit, the current divides inversely proportional to the resistance of each branch. The branch with the lower resistance gets more current, while the branch with higher resistance gets less current.
What is the main function of a network synthesizer?
A Reduce current
B Simplify complex circuits
C Increase impedance
D Regulate voltage
The main function of a network synthesizer is to simplify complex electrical circuits by creating an equivalent circuit that behaves in the same way as the original. This is useful for circuit analysis and design.