75-Archetype SyllabusPhysics • ARCH-P-01 • Spec P1

Full 6-Card Lesson 15-Question Timed Drill

UAT-UK SPEC CODE: P1 (Electricity)ASSUMED MATHS 1 PREREQUISITE: M3.4FREQUENCY: VERY HIGH

Series-Parallel Resistor Networks, Potential Dividers & Variable Sensor Meter Tables

Deconstructed from 23 past UAT-UK questions (9.87% of all historical Physics papers). Students using standard A-Level classroom methods spend an average of 145s on this archetype—blowing past the 90s ESAT budget. Using the 2-line Sub-90 heuristic below compresses solve time to 40s (saving 105s per question).

Historical Frequency

23 Past Qs

9.87% of Physics

Classroom Trap Time

145s

+55s over 90s budget

Sub-90 Target Time

40s

Banks +105s on the clock

Dominant UI Format

Table Matching

Maths 1 Skill: M3.4

Card 1 & Card 2 Preview: The Classroom Time Trap vs. Sub-90 2-Line Rule

Excerpted from our interactive 6-Step Topic Lesson for ARCH-P-01.

Launch All 6 Active-Recall Cards

CARD 1 OF 6 • THE CLASSROOM TIME TRAP (145s)

Why Students Bleed Time:

First compute

\frac{1}{R_p} = \frac{1}{6} + \frac{1}{12} = \frac{18}{72}

, invert to get

R_p = 4\,\Omega

, add

R_s = 2\,\Omega

to obtain

R_{\text{tot}} = 6\,\Omega

, solve

I = \frac{12}{6} = 2.0\text{ A}

, and finally multiply

V_p = I R_p = 8.0\text{ V}

(~120s).

In 23 past UAT-UK questions (9.87% of Physics), candidates lose 105s by using conductance 1/r_p instead of resistance r_p = (r₁*r₂)/(r₁+r₂). Instead, apply P1 with Maths 1 skill M3.4.

CARD 2 OF 6 • THE 2-LINE SUB-90 HEURISTIC (<40s)

Line 1 (Product-Over-Sum):

R_p = \frac{6\times 12}{6+12} = 4\,\Omega \implies R_{\text{tot}} = 2 + 4 = 6\,\Omega

Line 2 (Column Prune):

I = \frac{12}{6} = 2.0\text{ A}

and

V_p = 2.0\times 4 = 8.0\text{ V}

(30s).

Sanity & Limit Check: Verify units/signs against intermediate_stop_trap (Forgetting to invert 1/R_p = 1/R₁ + 1/R₂, adding 1/R_p directly to R_series) and sign_or_direction_flip (Assuming voltmeter across variable resistor R_var decreases when R_var increases).

Examiner Distractor Blueprint for ARCH-P-01

FOIL #1intermediate_stop_trap

Forgetting to invert 1/R_p = 1/R₁ + 1/R₂, adding 1/R_p directly to R_series

Using conductance 1/R_p instead of resistance R_p = (R₁*R₂)/(R₁+R₂).

Open Intermediate Stop Trap Clinic

FOIL #2sign_or_direction_flip

Assuming voltmeter across variable resistor R_var decreases when R_var increases

Confusing current decrease (I drops) with potential divider share V_var = V_in * R_var/(R_fixed + R_var) (which rises).

Open Sign / Direction Flip Clinic

FOIL #3table_column_pruning_trap

Evaluating complex branch voltages before checking total circuit current ammeter column first

Failing to prune 50% of table rows immediately via total resistance -> main ammeter trend.

Open Table Column Pruning Trap Clinic

FOIL #4subsystem_isolation_trap

Applying V = IR using total battery EMF for a single resistor in a series divider

Using whole-circuit voltage instead of component potential difference.

Open Subsystem Isolation Trap Clinic

Try 1 Live Sample Question Under the 90-Second Stopwatch

Press W to open the 2-line dry-wipe scratchpad, select A–E, and lock in to reveal the Dual-View solution.

Full 6-Card Lesson Launch All 15 Questions (ARCH-P-01)

ARCH-P-01: Series-Parallel Resistor Networks, Potential Dividers & Variable Sensor Meter Tables (Sample)Physics

00:00.0

SUB-90 ZONE (<40S)

0.0s40s Sub-9090s ESAT Budget150s Classroom

Question 1 of 1ARCH-P-01 (6-Card Lesson)Format: Standard 5-Option

Right-click any option to cross out • Keys A–E + Enter

Question 1 of 1 • 90s Target

Ready to Start Question 1?

The question stem, diagram, and answer options are hidden behind this pre-start gate. When you click below, the question will reveal and your 90-second split stopwatch will immediately begin ticking.

Physics•ARCH-P-01•Standard 5-Option

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