PCB material and copper weight basics in PCB Design - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the copper thickness in micrometers given the copper weight in ounces.

PCB Design

copper_thickness_um = [1] * 35

Drag options to blanks, or click blank then click option'

Acopper_weight_g

Bcopper_area

Ccopper_density

Dcopper_weight_oz

Attempts:

3 left

💡 Hint

Common Mistakes

Using copper weight in grams instead of ounces

Using copper area instead of weight

The copper thickness in micrometers is calculated by multiplying the copper weight in ounces by 35.

2fill in blank

medium

Complete the code to calculate the resistance of a copper trace given its length, width, and copper thickness.

PCB Design

resistance = resistivity * (length / (width * [1]))

Drag options to blanks, or click blank then click option'

Athickness_um

Bcopper_density

Ccopper_weight_oz

Dthickness_mm

Attempts:

3 left

💡 Hint

Common Mistakes

Using copper weight instead of thickness

Using thickness in millimeters without conversion

The resistance formula uses the copper thickness in micrometers to calculate the cross-sectional area.

3fill in blank

hard

Fix the error in the code to convert copper weight in ounces to thickness in micrometers.

PCB Design

thickness_um = copper_weight_oz [1] 35

Drag options to blanks, or click blank then click option'

A*

B+

C-

D/

Attempts:

3 left

💡 Hint

Common Mistakes

Using division instead of multiplication

Using addition or subtraction which are incorrect

Multiplying copper weight in ounces by 35 gives the thickness in micrometers.

4fill in blank

hard

Fill both blanks to calculate the copper weight in ounces from thickness in micrometers.

PCB Design

copper_weight_oz = [1] / [2]

Drag options to blanks, or click blank then click option'

Athickness_um

B35

Ccopper_density

Dcopper_area

Attempts:

3 left

💡 Hint

Common Mistakes

Using copper density or area instead of thickness

Dividing by wrong number

Dividing thickness in micrometers by 35 converts it back to copper weight in ounces.

5fill in blank

hard

Fill both blanks to calculate the cross-sectional area of a copper trace in square micrometers.

PCB Design

cross_section_um2 = [1] * [2]

Drag options to blanks, or click blank then click option'

Awidth_um

Bthickness_um

Clength_um

Dcopper_weight_oz

Attempts:

3 left

💡 Hint

Common Mistakes

Including length in cross-sectional area calculation

Using copper weight instead of thickness

The cross-sectional area is width_um * thickness_um.