SI Week 2 Quiz

What is Req?

• 11

• 36

• 1

• 6

Answer explanation

What does this symbol represent?

• Independent voltage source

• Dependent current source

• Independent current source

• Dependent voltage source

What type of source is this?

• CCCS

• VCCS

• VCVS

• CCVS

Answer explanation

The source is a voltage-controlled current source. The current supplied depends on a voltage somewhere else. The unit for the voltage is in Volts and the unit for 'a' is 1/Ω.

What is the value of Req?

• 50

• 58

• 12

• 68

Answer explanation

Resistors in parallel: 1/Rp = 1/20 + 1/30 = 1/12 -> Rp = 12

Req = 38 + Rp = 38 + 12 = 50

Given that Req = 50 ohms, what is the current flowing through the circuit?

• 1A

• 2A

• 0.5A

• 0.25A

Answer explanation

Since Req = 50 and V = 25, using Ohm's law (V=IR) 25/50 = 0.5A.

What do the highlighted sections describe?

• meshes

• loops

• current

• nodes

A closed path in a circuit that contains no other paths inside it. It is the smallest possible loop in the circuit. What is it?

• loop

• mesh

• branch

• path

___: the sum of all voltages in a loop must equal zero.

___: the total current flowing into a node much equal to the current flowing out of the node.