10.5 Kirchhoff's Laws

Who formulated Kirchhoff's circuit laws?

• Nikola Tesla

• Gustav Robert Kirchhoff

• Isaac Newton

• Albert Einstein

Kirchhoff's Voltage Law is a form of which fundamental law?

• Conservation of Mass

• Conservation of Energy

• Conservation of Momentum

• Conservation of Charge

What is the mathematical expression for Kirchhoff's Voltage Law?

• ∑P (closed loop) = 0

• ∑V (closed loop) = ∑IR (closed loop) = 0

• ∑I (closed loop) = 0

• ∑Q (closed loop) = 0

In a voltage divider, if two resistors are in series, what remains the same through both resistors?

• Voltage

• Resistance

• Power

• Current

What is the formula for Vout in a voltage divider circuit?

• Vout = Vin × [R1 + R2]

• Vout = Vin × [R2 / (R1 + R2)]

• Vout = Vin × [R2 - R1]

• Vout = Vin × [R1 / (R1 + R2)]

Kirchhoff's Current Law is a form of which fundamental law?

• Conservation of Momentum

• Conservation of Charge

• Conservation of Mass

• Conservation of Energy

What is the mathematical expression for Kirchhoff's Current Law?

• ∑P (at a node) = 0

• ∑I (at a node) = 0

• ∑V (at a node) = 0

• ∑Q (at a node) = 0

In a current divider, if two resistors are in parallel, what remains the same across both resistors?

• Resistance

• Power

• Current

• Voltage

What is the formula for the equivalent resistance of two resistors in parallel?

• Req = R1 + R2

• Req = (R1 × R2) / (R1 + R2)

• Req = R1 - R2

• Req = R1 / R2

In the example of a voltage divider, what is the value of R1 to achieve a Vout/Vin ratio of 0.067?

• 66 ohms

• 5 ohms

• 10 ohms

• 65 ohms