--- title: Ascertain the principal reason for which copper conductors are enclo… — Batteries, circuits and how electricit… · tree and pragmatics description: Ascertain the principal reason for which copper conductors are enclosed in a plastic sheath. Exam question 4 of lesson 27 «Batteries, circuits and how electricity flows» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/physics/27-batteries-circuits-and-how-electricity-flows/e4/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [questions](https://md.mova.elamur.ai/free/en/corpora/questions/) / [Physics](https://md.mova.elamur.ai/free/en/corpora/questions/physics/) / [Batteries, circuits and how electricit…](https://md.mova.elamur.ai/free/en/corpora/questions/physics/27-batteries-circuits-and-how-electricity-flows/) / e4 # Exam question 4 · Batteries, circuits and how electricity flows Ascertain the principal reason for which copper conductors are enclosed in a plastic sheath. **Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** you · **What happens:** ascertain, enclose · **To what, where:** principal reason, copper conductors, plastic sheath This is exam question 4 of lesson 27 «Batteries, circuits and how electricity flows» of the physics course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/27-batteries-circuits-and-how-electricity-flows/#e4). ## The question {#question} ```conllu # sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:e4:1 # text = Ascertain the principal reason for which copper conductors are enclosed in a plastic sheath. 1 Ascertain ascertain VERB VB Mood=Imp|VerbForm=Fin 0 root _ _ 2 the the DET DT Definite=Def|PronType=Art 4 det _ _ 3 principal principal ADJ JJ Degree=Pos 4 amod _ _ 4 reason reason NOUN NN Number=Sing 1 obj _ _ 5 for for ADP IN _ 6 case _ _ 6 which which PRON WDT PronType=Rel 10 obl _ _ 7 copper copper NOUN NN Number=Sing 8 compound _ _ 8 conductors conductor NOUN NNS Number=Plur 10 nsubj:pass _ _ 9 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 10 aux:pass _ _ 10 enclosed enclose VERB VBN Tense=Past|VerbForm=Part|Voice=Pass 4 acl:relcl _ _ 11 in in ADP IN _ 14 case _ _ 12 a a DET DT Definite=Ind|PronType=Art 14 det _ _ 13 plastic plastic ADJ JJ Degree=Pos 14 amod _ _ 14 sheath sheath NOUN NN Number=Sing 10 obl _ SpaceAfter=No 15 . . PUNCT . _ 1 punct _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **ascertain** | imperative | you *not said here* | the principal reason | | | | | vn discover-84 «NP V NP»: agent=Agent reason=Topic | | 2 | **enclose** | present · passive | | copper conductors | | a plastic sheath | | for the principal reason | vn contiguous\_location-47.8 «NP V NP»: subject=Co-Theme | One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree. ## The options {#options} ### Option 1 · ← Mova's choice · ✓ the right answer {#o1} Plastic does not conduct, thereby preventing the escape of current ```conllu # sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:e4:o1:1 # text = Plastic does not conduct, thereby preventing the escape of current 1 Plastic plastic NOUN NN Number=Sing 4 nsubj _ _ 2 does do AUX VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 4 aux _ _ 3 not not PART RB Polarity=Neg 4 advmod _ _ 4 conduct conduct VERB VB VerbForm=Inf 0 root _ SpaceAfter=No 5 , , PUNCT , _ 7 punct _ _ 6 thereby thereby ADV RB _ 7 advmod _ _ 7 preventing prevent VERB VBG Tense=Pres|VerbForm=Part 4 advcl _ _ 8 the the DET DT Definite=Def|PronType=Art 9 det _ _ 9 escape escape NOUN NN Number=Sing 7 obj _ _ 10 of of ADP IN _ 11 case _ _ 11 current current NOUN NN Number=Sing 9 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **not** **conduct** | present · do-support | Plastic | | | | | | vn accompany-51.7 «NP V NP»: agent=Agent | | 2 | **prevent** | gerund | Plastic *not said here* | the escape of current | | | | thereby *property* | vn forbid-64.4-1 «NP V NP»: agent=Causer escape=Theme | | 3 | **escape** | | current | | | | | | nom escape «act intransitive»: of=agent | ### Option 2 {#o2} Plastic accelerates the passage of the current ```conllu # sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:e4:o2:1 # text = Plastic accelerates the passage of the current 1 Plastic plastic NOUN NN Number=Sing 2 nsubj _ _ 2 accelerates accelerate VERB VBZ Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin 0 root _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 passage passage NOUN NN Number=Sing 2 obj _ _ 5 of of ADP IN _ 7 case _ _ 6 the the DET DT Definite=Def|PronType=Art 7 det _ _ 7 current current NOUN NN Number=Sing 4 nmod _ _ ``` | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **accelerate** | present | Plastic | the passage of the current | | | | | vn other\_cos-45.4 «NP V NP.patient»: agent=Agent passage=Patient | | 2 | **pass** | | the current | | | | | | nom passage «act intransitive»: of=agent | ### Option 3 {#o3} Plastic renders the copper magnetic ```conllu # sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:e4:o3:1 # text = Plastic renders the copper magnetic 1 Plastic plastic ADJ JJ Degree=Pos 2 amod _ _ 2 renders render NOUN NNS Number=Plur 5 nsubj _ _ 3 the the DET DT Definite=Def|PronType=Art 4 det _ _ 4 copper copper NOUN NN Number=Sing 2 nmod:unmarked _ _ 5 magnetic magnetic ADJ JJ Degree=Pos 0 root _ _ ``` The frames reader finds no event or fact in this sentence. ### Option 4 {#o4} Plastic stores surplus charge for subsequent use ```conllu # sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:e4:o4:1 # text = Plastic stores surplus charge for subsequent use 1 Plastic plastic NOUN NN Number=Sing 2 compound _ _ 2 stores store NOUN NNS Number=Plur 4 nsubj _ _ 3 surplus surplus ADJ JJ Degree=Pos 4 amod _ _ 4 charge charge NOUN NN Number=Sing 0 root _ _ 5 for for ADP IN _ 7 case _ _ 6 subsequent subsequent ADJ JJ Degree=Pos 7 amod _ _ 7 use use NOUN NN Number=Sing 4 nmod _ _ ``` The frames reader finds no event or fact in this sentence. **Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. 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