Electronics Worksheet: Electrical Safety

Electronics lesson 2: Electrical safety · Set 10 · 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 short circuit (c) a parallel circuit (d) a safe circuit
2. 2.True or false: to dry your hands first is not safe. (a) False (b) True
3. 3.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
4. 4.⚠️ Why must we never touch switches with wet hands? (a) it is just untidy (b) it spoils the paint (c) water carries current (d) water makes it cold
5. 5.⚠️ Who should be with you when you build a circuit? (a) a trusted adult (b) a younger child (c) a stranger online (d) nobody
6. 6.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 12 V (c) 1.5 V (d) 230 V
7. 7.Which of these is safe? (a) open a phone charger (b) climb an electric pole (c) take cells out after use (d) fly a kite near wires
8. 8.Which of these is safe? (a) use a cable with cuts (b) fly a kite near wires (c) touch a fallen wire (d) stop if a part gets hot
9. 9.⚠️ Is it safe to fly a kite near wires? (a) not safe (b) safe
10. 10.Which of these is not safe? (a) build with an adult near (b) dry your hands first (c) touch a fallen wire (d) use small battery cells
11. 11.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
12. 12.⚠️ Which power source should children use for electronics projects? (a) a wall socket (b) an inverter socket (c) a mains extension board (d) a small battery pack
13. 13.True or false: to throw cells in a fire is not safe. (a) True (b) False
14. 14.⚠️ Is it safe to climb an electric pole? (a) not safe (b) safe
15. 15.Which of these is not safe? (a) fly kites in open fields (b) dry your hands first (c) keep drinks far away (d) use a cable with cuts
16. 16.Which of these is not safe? (a) use small battery cells (b) poke things in a socket (c) take cells out after use (d) stop if a part gets hot
17. 17.Which of these is not safe? (a) use small battery cells (b) stop if a part gets hot (c) throw cells in a fire (d) stay away from pylons
18. 18.⚠️ Is it safe to throw cells in a fire? (a) not safe (b) safe
19. 19.⚠️ Is it safe to poke things in a socket? (a) safe (b) not safe
20. 20.True or false: to use mains for a project is safe. (a) False (b) True
21. 21.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a long wire (b) a fuse or MCB (c) a plug top (d) a bulb
22. 22.True or false: to throw cells in a fire is safe. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) use small battery cells (b) poke things in a socket (c) build with an adult near (d) stay away from pylons
24. 24.🔍 Which is the odd one out? (a) touch a switch when wet (b) climb an electric pole (c) poke things in a socket (d) take cells out after use
25. 25.True or false: to build with an adult near is not safe. (a) True (b) False
26. 26.True or false: to fly a kite near wires is not safe. (a) True (b) False
27. 27.True or false: to use a cable with cuts is not safe. (a) True (b) False
28. 28.True or false: to poke things in a socket is not safe. (a) False (b) True
29. 29.⚠️ Is it safe to stay away from pylons? (a) not safe (b) safe
30. 30.⚠️ Is it safe to touch a fallen wire? (a) safe (b) not safe
31. 31.True or false: to stop if a part gets hot is not safe. (a) True (b) False
32. 32.True or false: to touch a switch when wet is not safe. (a) True (b) False
33. 33.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
34. 34.True or false: to use mains for a project is not safe. (a) True (b) False
35. 35.True or false: to build with an adult near is safe. (a) False (b) True
36. 36.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
37. 37.🔍 Which is the odd one out? (a) throw cells in a fire (b) stay away from pylons (c) keep drinks far away (d) build with an adult near
38. 38.True or false: to keep drinks far away is not safe. (a) False (b) True
39. 39.Which of these is not safe? (a) fly kites in open fields (b) keep drinks far away (c) use mains for a project (d) use small battery cells
40. 40.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe

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