---
title: Sam joins a bulb to a battery with only one wire. Why doesn't it lig… — Batteries, circuits and how electricit… · tree and pragmatics
description: Sam joins a bulb to a battery with only one wire. Why doesn't it light? Test 2 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 choice was right.
---

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# Test 2 · Batteries, circuits and how electricity flows

<!-- .ven lang=en -->
Sam joins a bulb to a battery with only one wire. Why doesn't it light?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 1 · right ✓ · **Who acts:** Sam, bulb · **What happens:** join, do, not light · **To what, where:** bulb

<!-- .vabout -->
This is test 2 of lesson 27 «Batteries, circuits and how electricity flows» of the physics course of Mova's primary school. 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/#t2).

## The question {#question}

<!-- .note -->
*Sentence 1:* Sam joins a bulb to a battery with only one wire.

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:1
# text = Sam joins a bulb to a battery with only one wire.
1	Sam	Sam	PROPN	NNP	Number=Sing	2	nsubj	_	_
2	joins	join	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	a	a	DET	DT	Definite=Ind|PronType=Art	4	det	_	_
4	bulb	bulb	NOUN	NN	Number=Sing	2	obj	_	_
5	to	to	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	battery	battery	NOUN	NN	Number=Sing	2	obl	_	_
8	with	with	ADP	IN	_	11	case	_	_
9	only	only	ADV	RB	_	10	advmod	_	_
10	one	one	NUM	CD	NumForm=Word|NumType=Card	11	nummod	_	_
11	wire	wire	NOUN	NN	Number=Sing	2	obl	_	SpaceAfter=No
12	.	.	PUNCT	.	_	2	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **join** | present | Sam | a bulb |  |  |  | to a battery; with one wire | vn mix-22.1-2-1 «NP V NP PP.co-patient»: agent=Agent bulb=Patient to battery=Co-Patient |

<!-- .note -->
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.

<!-- .note -->
*Sentence 2:* Why doesn't it light?

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:2
# text = Why doesn't it light?
1	Why	why	ADV	WRB	PronType=Int	0	root	_	_
2	does	do	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	1	conj	_	SpaceAfter=No
3	n't	not	PART	RB	Polarity=Neg	5	advmod	_	_
4	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	5	nsubj	_	_
5	light	light	NOUN	NN	Number=Sing	2	obj	_	SpaceAfter=No
6	?	?	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **do** | present |  |  |  |  |  |  | vn act-114-1 «NP V»: agent=Agent |
| 2 | **not** **light** |  | bulb |  |  |  |  |  | tree rules |

## The options {#options}

### Option 1 · ← Mova's choice · ✓ the right answer {#o1}

<!-- .ven lang=en -->
There is no complete loop for the electricity to flow round

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:o1:1
# text = There is no complete loop for the electricity to flow round
1	There	there	PRON	EX	PronType=Dem	2	expl	_	_
2	is	be	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	no	no	DET	DT	PronType=Neg	5	det	_	_
4	complete	complete	ADJ	JJ	Degree=Pos	5	amod	_	_
5	loop	loop	NOUN	NN	Number=Sing	2	nsubj	_	_
6	for	for	ADP	IN	_	8	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	8	det	_	_
8	electricity	electricity	NOUN	NN	Number=Sing	5	nmod	_	_
9	to	to	PART	TO	_	10	mark	_	_
10	flow	flow	VERB	VB	VerbForm=Inf	5	acl	_	_
11	round	round	ADV	RB	_	10	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **be** | present | no complete loop for the electricity |  |  | there |  |  | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **flow** | to-infinitive | no complete loop for the electricity *not said here* |  |  |  |  | round *property* | vn appear-48.1.1 «NP V»: agent=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
One wire is too short to carry electricity

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:o2:1
# text = One wire is too short to carry electricity
1	One	one	NUM	CD	NumForm=Word|NumType=Card	2	nummod	_	_
2	wire	wire	NOUN	NN	Number=Sing	5	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	5	cop	_	_
4	too	too	ADV	RB	_	5	advmod	_	_
5	short	short	ADJ	JJ	Degree=Pos	0	root	_	_
6	to	to	PART	TO	_	7	mark	_	_
7	carry	carry	VERB	VB	VerbForm=Inf	5	xcomp	_	_
8	electricity	electricity	NOUN	NN	Number=Sing	7	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | One wire |  |  |  |  | short *property* | tree rules |
| 2 | **carry** | to-infinitive | One wire *not said here* | electricity |  |  |  |  | vn carry-11.4 «NP V NP»: agent=Agent electricity=Theme |

### Option 3 {#o3}

<!-- .ven lang=en -->
The bulb needs to warm up first

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:o3:1
# text = The bulb needs to warm up first
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	bulb	bulb	NOUN	NN	Number=Sing	3	nsubj	_	_
3	needs	need	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	to	to	PART	TO	_	5	mark	_	_
5	warm	warm	VERB	VB	VerbForm=Inf	3	xcomp	_	_
6	up	up	ADP	RP	_	5	compound:prt	_	_
7	first	first	ADV	RB	NumForm=Word|NumType=Ord	5	advmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **need** | present | the bulb |  |  |  |  |  | vn want-32.1-1-1 «NP V NP S\_INF»: agent=Pivot clause=Theme |
| 2 | **warm up** *not said to happen* | to-infinitive | the bulb *not said here* |  |  |  |  | first *property* | vn cooking-45.3 «NP.patient V»: agent=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
The battery only works with a switch

```conllu
# sent_id = question:physics:27-batteries-circuits-and-how-electricity-flows:t2:o4:1
# text = The battery only works with a switch
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	battery	battery	NOUN	NN	Number=Sing	4	nsubj	_	_
3	only	only	ADV	RB	_	4	advmod	_	_
4	works	work	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	with	with	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	switch	switch	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **work** | present | the battery |  |  |  |  | with a switch | vn cooperate-73.1-3 «NP V PP.co-agent PP.theme»: agent=Agent with switch=Co-Agent |

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**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. Elamur Cosmic License.

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