LAB 3
Gareth Beckham
Lab #3 Worksheet Watch the Video on eCampus. For each of the Series-Parallel circuits:
1) Build the circuit in Multisim Live and “measure” the Total Current and the current in each of the
parallel branches.
2) Calculate the Total Resistance, RT, of the Circuit.
3) Using RT, use Ohm's Law to calculate the total current, IT.
4) Use IT current divider formula to determine the current in each of the resistors. Draw the
direction of each current on the diagram.
Scan and upload your work in eCampus. If you do not have a scanner, use a scanning phone app such as
Google Drive, Office Lens, or Camscanner.
Current Divider: 𝑰𝟏 = 𝑰𝑻 ( 𝑹𝟐
𝑹𝟏+𝑹𝟐 )
1. Find the current magnitude and direction in each resistor using the current divider formula.
(Remember: The current is the same for resistors that are in series with each other.)
2. Find the current magnitude and direction in each resistor using the current divider formula. Hint:
First find the current through R2. The current will first branch at node A. The first branch has
resistance R2. The 2nd branch resistance will be the combined resistance of resistors 4-9. Trace a
path from point A to point B to determine which of theses resistors are in series and which are in
parallel and calculate accordingly.