3.1. Analog Electronic Circuits

Try these first

1. 1.

   State Kirchhoff’s Current Law.

   Hint

   Think about how current flows in and out of a node.

2. 2.

   What does KVL stand for?

   Hint

   Consider what we analyze in a closed loop.

3. 3.

   What does Kirchhoff’s Current Law state?

   • Total current entering = Total current leaving
   • Total current entering > Total current leaving
   • Total current entering < Total current leaving

   Hint

   Think about conservation of charge.

4. 4.

   True or False: KVL can only be applied to DC circuits.

   • True
   • False

   Hint

   Consider where KVL can be useful.

5. 5.

   You have a circuit with two resistors in parallel and a voltage supply. Calculate the Thevenin equivalent voltage and resistance from the perspective of one of the resistors.

   Hint

   Think about how resistances combine in parallel.

6. 6.

   Given a node with three incoming currents (4A, 6A, 2A) and two outgoing currents (I1 and I2), use KCL to find I1 and I2 if you know one current must be twice the other.

   Hint

   Use algebraic manipulation to solve the equations.