--- title: Electricity — circuits, switches and safety — the lesson's questions with trees and pragmatics · World description: The 17 test and exam questions of lesson 55 «Electricity — circuits, switches and safety» of the world course of Mova's primary school, each with its options, Mova's choice and the right answer, every sentence with its dependency tree and pragmatics. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/questions/world/55-electricity/) [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/) / [World](https://md.mova.elamur.ai/free/en/corpora/questions/world/) / Electricity — circuits, switches and s… # Electricity — circuits, switches and safety The 17 questions of lesson 55 «Electricity — circuits, switches and safety» of the world course of Mova's primary school with their options, 91 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/55-electricity/). - [t1](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t1/) — Tom builds a circuit with a battery, a bulb and wires, but uses a pencil's wooden body to join two wires. The bulb stays dark. Why? — wrong ✗ · ★★ - [t2](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t2/) — In a doorbell circuit, what does pressing the button do? — wrong ✗ · ★★ - [t3](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t3/) — Which is true? — wrong ✗ · ★★ - [t4](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t4/) — A child wants to test whether a spoon is metal or plastic using a battery, a bulb and wires. What will show it is metal? — right ✓ · ★★ - [t5](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t5/) — A kettle cable has a crack and the copper inside shows. What should you do? — wrong ✗ · ★★ - [t6](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t6/) — What would happen to the lights in a circuit if a wire broke in the middle? — right ✓ · ★★ - [t7](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t7/) — Why is a metal ladder dangerous near power lines but a dry wooden one less so? — right ✓ · ★★ - [t8](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t8/) — In which device is electricity mainly changed into movement? — wrong ✗ · ★★ - [t9](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t9/) — Two batteries are placed in a row in a torch instead of one. What happens to the bulb? — right ✓ · ★★ - [t10](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t10/) — bulb won't light, wire's come off one end, why — wrong ✗ · ★★ - [t11](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t11/) — why are wires plastic on the outside — wrong ✗ · ★★ - [t12](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t12/) — my little bro says it's fine to touch a plug with wet hands. true? — right ✓ · ★★ - [t13](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/t13/) — Leo says a plastic spoon would make the circuit work. right? — wrong ✗ · ★★ - [e1](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/e1/) — Which of the following statements most accurately characterises the condition necessary for the flow of electricity? — wrong ✗ · exam - [e2](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/e2/) — Identify, from the materials hereinafter enumerated, that which is designated a conductor of electricity. — wrong ✗ · exam - [e3](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/e3/) — It is given that a second battery is added in a row to a circuit containing a single bulb. Determine the consequent effect upon the bulb. — right ✓ · exam - [e4](https://md.mova.elamur.ai/free/en/corpora/questions/world/55-electricity/e4/) — Select the response that is consistent with the established facts concerning the construction of electric wires. — wrong ✗ · exam - ← previous: [54. Sound — vibrations, loudness, pitch and echoes](https://md.mova.elamur.ai/free/en/corpora/questions/world/54-sound/) - next →: [56. Energy — where it comes from and how to save it](https://md.mova.elamur.ai/free/en/corpora/questions/world/56-energy/) - ↑ back to [World](https://md.mova.elamur.ai/free/en/corpora/questions/world/)