5 Lecture
PHY301
Midterm & Final Term Short Notes
Current divider with two parallel resistances
The current divider with two parallel resistances is an essential tool in circuit analysis, as it allows us to calculate the current flowing through individual circuit components.
Important Mcq's
Midterm & Finalterm Prepration
Past papers included
Download PDF
What is a current divider with two parallel resistances?
a) A circuit that divides the voltage flowing through a circuit into two branches
b) A circuit that divides the current flowing through a circuit into two branches
c) A circuit that increases the current flowing through a circuit
d) A circuit that decreases the current flowing through a circuit
Answer: b) A circuit that divides the current flowing through a circuit into two branches
What is the formula for calculating the current flowing through each resistor in a current divider with two parallel resistances?
a) I1 = (R1 / (R1 + R2)) x I and I2 = (R2 / (R1 + R2)) x I
b) I1 = (R2 / (R1 + R2)) x I and I2 = (R1 / (R1 + R2)) x I
c) I1 = (R1 + R2) x I and I2 = (R1 + R2) x I
d) I1 = R1 x I and I2 = R2 x I
Answer: a) I1 = (R1 / (R1 + R2)) x I and I2 = (R2 / (R1 + R2)) x I
What happens to the current flowing through each resistor if the resistance value of one resistor is significantly higher than the other?
a) The current flowing through the higher resistance resistor is significantly less than the current flowing through the lower resistance resistor
b) The current flowing through the higher resistance resistor is significantly more than the current flowing through the lower resistance resistor
c) The current flowing through each resistor is equal
d) The current flowing through each resistor is unpredictable
Answer: a) The current flowing through the higher resistance resistor is significantly less than the current flowing through the lower resistance resistor
How is the current divider with two parallel resistances used in power supply circuits?
a) To increase the current flowing through the circuit
b) To distribute current between multiple loads, allowing the power supply to deliver a constant voltage to each load
c) To measure the current flowing through the circuit
d) To regulate the voltage flowing through the circuit
Answer: b) To distribute current between multiple loads, allowing the power supply to deliver a constant voltage to each load
What is the importance of the current divider with two parallel resistances in circuit analysis and design?
a) It allows us to calculate the voltage flowing through individual circuit components
b) It allows us to calculate the power flowing through individual circuit components
c) It allows us to calculate the current flowing through individual circuit components
d) It allows us to calculate the resistance value of individual circuit components
Answer: c) It allows us to calculate the current flowing through individual circuit components
Can the current divider with two parallel resistances be used with more than two resistors?
a) No, it can only be used with two resistors
b) Yes, but the calculation formula becomes more complex
c) Yes, but the calculation formula remains the same
d) Yes, but it requires additional circuit components
Answer: b) Yes, but the calculation formula becomes more complex
Can the current divider with two parallel resistances be used in AC circuits?
a) No, it can only be used in DC circuits
b) Yes, but the calculation formula is different, and the impedance value replaces the resistance value
c) Yes, but the calculation formula remains the same as in DC circuits
d) Yes, but it requires additional circuit components
Answer: b) Yes, but the calculation formula is different, and the impedance value replaces the resistance value
Subjective Short Notes
Midterm & Finalterm Prepration
Past papers included
Download PDF
What is a current divider with two parallel resistances?
Answer: A current divider with two parallel resistances is a circuit that divides the current flowing through a circuit into two branches, using two parallel resistors.
What is the formula for calculating the current flowing through each resistor in a current divider with two parallel resistances?
Answer: The formula is I1 = (R2 / (R1 + R2)) x I and I2 = (R1 / (R1 + R2)) x I, where I is the total current flowing through the circuit, I1 is the current flowing through R1, I2 is the current flowing through R2, R1 is the resistance of the first resistor, and R2 is the resistance of the second resistor.
What is the relationship between the current flowing through each resistor and the resistance value?
Answer: The current flowing through each resistor is proportional to the resistance value.
How is the current divider with two parallel resistances used in power supply circuits?
Answer: It is used to distribute current between multiple loads, allowing the power supply to deliver a constant voltage to each load.
What is the importance of the current divider with two parallel resistances in circuit analysis and design?
Answer: It allows us to calculate the current flowing through individual circuit components, which is essential for designing and analyzing complex circuits.
Can the current divider with two parallel resistances be used with more than two resistors?
Answer: Yes, the concept can be extended to multiple resistors in parallel, but the calculation formula becomes more complex.
What happens to the current flowing through each resistor if the resistance value of one resistor is significantly higher than the other?
Answer: The current flowing through the higher resistance resistor is significantly less than the current flowing through the lower resistance resistor.
Can the current divider with two parallel resistances be used in AC circuits?
Answer: Yes, it can be used in AC circuits, but the calculation formula is different, and the impedance value replaces the resistance value.
Why is the current divider with two parallel resistances important in power amplifier circuits?
Answer: It allows the amplifier to deliver a constant voltage to each output load, regardless of the individual current requirements of each load.
Can the current divider with two parallel resistances be used in digital circuits?
Answer: Yes, it can be used in digital circuits to divide the current flowing through a circuit into multiple branches, depending on the individual current requirements of each branch.