BME Topic 3

Q1. Which is the correct KCL applied to node b?

• I1 + I2 + I3 = 0

• I1 + I2 - I3 = 0

• I1 = I2 + I3

• I1 = I2 - I3

Q2. Which is correct KVL equation for loop in red?

• Vs = I1.R1 + I3 (R3 + R4) + I5.R5

• Vs + I1.R1 + I3 (R3 + R4) + I5.R5 =0

• Vs = I1.R1 + I3.R3 + I5.R5

• Vs - I1.R1 - I3 (R3 + R4) + I5.R5 =0

Q3. Three resistors of 100 kΩ each will give a total of ____ when connected in series and _____ in parallel.

• 33.3 kΩ; 300 kΩ

• 300 kΩ; 33.3 kΩ

• 33.3 kΩ; 33.3 kΩ

• 300 kΩ; 300 kΩ

Q4. An ideal opamp has __________.

• Zero input resistance; Zero output resistance

• Infinite input resistance; Infinite output resistance

• Zero input resistance; Infinite output resistance

• Infinite input resistance; Zero output resistance

Q5. What is the closed-loop gain of this amplifier?

• - R2 / R1

• - R1 / R2

• 1 + (R1/R2)

• 1 + (R2/R1)