Electronics Worksheet: Electrical Safety

Electronics lesson 2: Electrical safety · Set 280 · 40 questions

Remember (Low, dry, with an adult): Never use mains sockets (about 230 V) for projects; never open chargers or poke into sockets. Water carries current: dry hands, no drinks near circuits, no switches when wet. Use small battery cells with an adult; stop if a part gets hot; keep away from fallen wires, poles and kites near power lines.

1. 1.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) an open circuit (b) a safe circuit (c) a parallel circuit (d) a short circuit
2. 2.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
3. 3.Which of these is safe? (a) poke things in a socket (b) use small battery cells (c) climb an electric pole (d) throw cells in a fire
4. 4.🔍 Which is the odd one out? (a) stop if a part gets hot (b) use small battery cells (c) take cells out after use (d) touch a fallen wire
5. 5.True or false: to use mains for a project is not safe. (a) False (b) True
6. 6.True or false: to climb an electric pole is not safe. (a) False (b) True
7. 7.True or false: to stay away from pylons is not safe. (a) True (b) False
8. 8.Which of these is safe? (a) poke things in a socket (b) use a cable with cuts (c) stay away from pylons (d) use mains for a project
9. 9.🔍 Which is the odd one out? (a) take cells out after use (b) keep drinks far away (c) use small battery cells (d) use mains for a project
10. 10.True or false: to touch a fallen wire is safe. (a) True (b) False
11. 11.Which of these is not safe? (a) build with an adult near (b) dry your hands first (c) fly kites in open fields (d) poke things in a socket
12. 12.True or false: to touch a switch when wet is safe. (a) False (b) True
13. 13.Which of these is not safe? (a) dry your hands first (b) take cells out after use (c) fly kites in open fields (d) fly a kite near wires
14. 14.⚠️ Is it safe to use small battery cells? (a) safe (b) not safe
15. 15.🔍 Which is the odd one out? (a) throw cells in a fire (b) build with an adult near (c) open a phone charger (d) poke things in a socket
16. 16.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
17. 17.⚠️ Is it safe to climb an electric pole? (a) safe (b) not safe
18. 18.Which of these is not safe? (a) use mains for a project (b) fly kites in open fields (c) stop if a part gets hot (d) keep drinks far away
19. 19.True or false: to stop if a part gets hot is not safe. (a) False (b) True
20. 20.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a plug top (b) a long wire (c) a fuse or MCB (d) a bulb
21. 21.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 12 V (c) 1.5 V (d) 230 V
22. 22.True or false: to take cells out after use is safe. (a) False (b) True
23. 23.Which of these is not safe? (a) stop if a part gets hot (b) dry your hands first (c) touch a fallen wire (d) use small battery cells
24. 24.🔍 Which is the odd one out? (a) dry your hands first (b) keep drinks far away (c) build with an adult near (d) open a phone charger
25. 25.🔍 Which is the odd one out? (a) open a phone charger (b) use a cable with cuts (c) throw cells in a fire (d) keep drinks far away
26. 26.Which of these is not safe? (a) dry your hands first (b) fly kites in open fields (c) climb an electric pole (d) stop if a part gets hot
27. 27.⚠️ Which power source should children use for electronics projects? (a) an inverter socket (b) a small battery pack (c) a wall socket (d) a mains extension board
28. 28.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
29. 29.True or false: to throw cells in a fire is not safe. (a) True (b) False
30. 30.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
31. 31.🔍 Which is the odd one out? (a) open a phone charger (b) stop if a part gets hot (c) fly a kite near wires (d) use a cable with cuts
32. 32.Which of these is not safe? (a) use small battery cells (b) dry your hands first (c) use a cable with cuts (d) fly kites in open fields
33. 33.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
34. 34.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) shout for an adult (b) wait and watch (c) pull them by the hand (d) pour water on them
35. 35.⚠️ Why must we never touch switches with wet hands? (a) water carries current (b) it is just untidy (c) water makes it cold (d) it spoils the paint
36. 36.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
37. 37.🔍 Which is the odd one out? (a) poke things in a socket (b) use small battery cells (c) keep drinks far away (d) build with an adult near
38. 38.Which of these is not safe? (a) take cells out after use (b) build with an adult near (c) use small battery cells (d) throw cells in a fire
39. 39.Which of these is safe? (a) dry your hands first (b) use a cable with cuts (c) poke things in a socket (d) use mains for a project
40. 40.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe

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