Electronics Worksheet: Electrical Safety

Electronics lesson 2: Electrical safety · Set 302 · 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) a short circuit (b) a parallel circuit (c) an open circuit (d) a safe circuit
2. 2.True or false: to take cells out after use is safe. (a) False (b) True
3. 3.⚠️ Is it safe to stop if a part gets hot? (a) not safe (b) safe
4. 4.⚠️ Which power source should children use for electronics projects? (a) a mains extension board (b) an inverter socket (c) a small battery pack (d) a wall socket
5. 5.Which of these is safe? (a) use a cable with cuts (b) fly a kite near wires (c) build with an adult near (d) poke things in a socket
6. 6.Which of these is not safe? (a) use small battery cells (b) build with an adult near (c) stop if a part gets hot (d) fly a kite near wires
7. 7.Which of these is not safe? (a) stop if a part gets hot (b) keep drinks far away (c) throw cells in a fire (d) use small battery cells
8. 8.🔍 Which is the odd one out? (a) poke things in a socket (b) touch a switch when wet (c) open a phone charger (d) dry your hands first
9. 9.🔍 Which is the odd one out? (a) take cells out after use (b) stay away from pylons (c) keep drinks far away (d) touch a switch when wet
10. 10.Which of these is safe? (a) fly kites in open fields (b) poke things in a socket (c) throw cells in a fire (d) open a phone charger
11. 11.Which of these is safe? (a) open a phone charger (b) fly a kite near wires (c) take cells out after use (d) use a cable with cuts
12. 12.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
13. 13.Which of these is not safe? (a) stay away from pylons (b) take cells out after use (c) use mains for a project (d) build with an adult near
14. 14.⚠️ Is it safe to dry your hands first? (a) not safe (b) safe
15. 15.🔍 Which is the odd one out? (a) poke things in a socket (b) open a phone charger (c) use small battery cells (d) touch a switch when wet
16. 16.⚠️ Is it safe to use small battery cells? (a) not safe (b) safe
17. 17.Which of these is safe? (a) climb an electric pole (b) use a cable with cuts (c) fly a kite near wires (d) keep drinks far away
18. 18.⚠️ About how many volts do home sockets in India supply? (a) 12 V (b) 1.5 V (c) 9 V (d) 230 V
19. 19.⚠️ Is it safe to fly kites in open fields? (a) safe (b) not safe
20. 20.⚠️ Is it safe to use a cable with cuts? (a) safe (b) not safe
21. 21.⚠️ Is it safe to use mains for a project? (a) safe (b) not safe
22. 22.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pour water on them (b) pull them by the hand (c) wait and watch (d) shout for an adult
23. 23.Which of these is safe? (a) use small battery cells (b) poke things in a socket (c) touch a switch when wet (d) use mains for a project
24. 24.Which of these is safe? (a) touch a fallen wire (b) throw cells in a fire (c) stay away from pylons (d) open a phone charger
25. 25.True or false: to open a phone charger is safe. (a) False (b) True
26. 26.🔍 Which is the odd one out? (a) build with an adult near (b) stop if a part gets hot (c) use small battery cells (d) climb an electric pole
27. 27.True or false: to use mains for a project is safe. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) open a phone charger (b) stop if a part gets hot (c) throw cells in a fire (d) climb an electric pole
29. 29.True or false: to build with an adult near is not safe. (a) True (b) False
30. 30.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
31. 31.True or false: to fly a kite near wires is not safe. (a) False (b) True
32. 32.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a fuse or MCB (b) a plug top (c) a long wire (d) a bulb
33. 33.🔍 Which is the odd one out? (a) use small battery cells (b) build with an adult near (c) throw cells in a fire (d) take cells out after use
34. 34.True or false: to climb an electric pole is not safe. (a) False (b) True
35. 35.⚠️ Why must we never touch switches with wet hands? (a) water makes it cold (b) it spoils the paint (c) water carries current (d) it is just untidy
36. 36.🔍 Which is the odd one out? (a) use small battery cells (b) take cells out after use (c) fly kites in open fields (d) use mains for a project
37. 37.Which of these is safe? (a) poke things in a socket (b) touch a fallen wire (c) stop if a part gets hot (d) touch a switch when wet
38. 38.True or false: to keep drinks far away is not safe. (a) False (b) True
39. 39.True or false: to take cells out after use is not safe. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) keep drinks far away (b) take cells out after use (c) use small battery cells (d) open a phone charger

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