75-Archetype SyllabusPhysics • ARCH-P-03 • Spec P2

Full 6-Card Lesson 15-Question Timed Drill

UAT-UK SPEC CODE: P2 (Magnetism)ASSUMED MATHS 1 PREREQUISITE: M3.4FREQUENCY: MEDIUM

Magnetic Flux Patterns & Motor Effect Force on Current-Carrying Conductors (F = BIL)

Deconstructed from 9 past UAT-UK questions (3.86% of all historical Physics papers). Students using standard A-Level classroom methods spend an average of 135s on this archetype—blowing past the 90s ESAT budget. Using the 2-line Sub-90 heuristic below compresses solve time to 35s (saving 100s per question).

Historical Frequency

9 Past Qs

3.86% of Physics

Classroom Trap Time

135s

+45s over 90s budget

Sub-90 Target Time

35s

Banks +100s on the clock

Dominant UI Format

5-Option A–E

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-03.

Launch All 6 Active-Recall Cards

CARD 1 OF 6 • THE CLASSROOM TIME TRAP (135s)

Why Students Bleed Time:

Convert time

t = 2 \times 60 = 120\text{ s}

, calculate current

I = \frac{Q}{t} = \frac{30}{120} = 0.25\text{ A}

, convert length

L = \frac{20}{100} = 0.2\text{ m}

, and evaluate

F = B I L = 0.40 \times 0.25 \times 0.2 = 0.02\text{ N}

(~120s).

In 9 past UAT-UK questions (3.86% of Physics), candidates lose 100s by pointing the second finger along electron velocity (- to +), reversing the magnetic force direction. Instead, apply P2 with Maths 1 skill M3.4.

CARD 2 OF 6 • THE 2-LINE SUB-90 HEURISTIC (<35s)

Line 1 (SI Grid):

F = B \left(\frac{Q}{60 t_{\text{min}}}\right) \left(\frac{L_{\text{cm}}}{100}\right)

Line 2 (Cancel Zeros):

F = 0.40 \times 0.25 \times 0.2 = 0.02\text{ N}

(25s).

Sanity & Limit Check: Verify units/signs against sign_or_direction_flip (Using electron flow direction instead of conventional current (+ to -) in Fleming's Left-Hand Rule) and unit_or_prefix_mismatch (Using total wire/rod length instead of the active length L between the rails in F = BIL (or leaving cm/minutes un-converted)).

Examiner Distractor Blueprint for ARCH-P-03

FOIL #1sign_or_direction_flip

Using electron flow direction instead of conventional current (+ to -) in Fleming's Left-Hand Rule

Pointing the second finger along electron velocity (- to +), reversing the magnetic force direction.

Open Sign / Direction Flip Clinic

FOIL #2unit_or_prefix_mismatch

Using total wire/rod length instead of the active length L between the rails in F = BIL (or leaving cm/minutes un-converted)

Substituting rod overhang length in cm instead of active perpendicular length in metres, or forgetting I = Q / (60*t_min).

Open Unit / Prefix Mismatch Clinic

FOIL #3fence_post_or_domain_trap

Applying F = BIL when the wire is parallel to the magnetic field lines (where F = 0)

A conductor parallel to B experiences zero magnetic force.

Open Fence-Post / Domain Trap Clinic

FOIL #4intermediate_stop_trap

Finding current I = Q/t and stopping before multiplying by B*L

Stopping at the electric current step.

Open Intermediate Stop 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-03)

ARCH-P-03: Magnetic Flux Patterns & Motor Effect Force on Current-Carrying Conductors (F = BIL) (Sample)Physics

00:00.0

SUB-90 ZONE (<35S)

0.0s35s Sub-9090s ESAT Budget150s Classroom

Question 1 of 1ARCH-P-03 (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-03•Standard 5-Option

or press Enter to start