When working your way back up through your redraws, the ... can be determined using Ohm's Law because the ... for that group of components is the same when they are in series.

When working your way back up through your redraws, the ... can be determined using Ohm's Law because the ... for that group of components is the same when they are in series.

• A. component currents / component voltages
• B. component voltages / component current
• C. total current / component wattage
• D. total resistance / component resistance

Answer: (A)

In a series group, the same current flows through every component. That shared current is what lets Ohm’s Law be used to find the individual component values. First, determine the current for the whole series block using I = V_total / R_total. That current is the same through each component, so you know the current through every part. Then you can find each component’s voltage drop with V_i = I × R_i. This is why the currents are the quantity you derive with Ohm’s Law in this situation—the group’s current is uniform across all components in series.

In a series group, the same current flows through every component. That shared current is what lets Ohm’s Law be used to find the individual component values. First, determine the current for the whole series block using I = V_total / R_total. That current is the same through each component, so you know the current through every part. Then you can find each component’s voltage drop with V_i = I × R_i. This is why the currents are the quantity you derive with Ohm’s Law in this situation—the group’s current is uniform across all components in series.