Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 177 · 40 questions

Remember (Find the topic, use the idea): Find the topic: energy, safety, conductor, closed loop, switches, cells, symbols, series or parallel. Use that lesson’s idea — complete loop, all ON for series, cells add up, one path or many. For sums, write the working and check it again.

1. 1.🔁 Is the circuit closed or open if the switch is OFF? (a) open (b) closed
2. 2.⚡ What does a water heater mainly change electricity into? (a) sound (b) movement (c) light (d) heat
3. 3.Which drawing is the symbol for a switch? (a) two equal parallel lines (b) many long-short pairs (c) a line lifted at a gap (d) two or more cell symbols
4. 4.⚠️ Is it safe to build with an adult near? (a) safe (b) not safe
5. 5.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) capacitor (b) voltmeter (c) switch (d) ammeter
6. 6.✏️ In a circuit diagram, wires are usually drawn as … (a) wavy lines (b) little stars (c) straight lines (d) dotted circles
7. 7.🔍 Which is the odd one out? (a) keep drinks far away (b) stay away from pylons (c) open a phone charger (d) use small battery cells
8. 8.🔋 What is a battery? (a) one single wire (b) two or more cells joined (c) a kind of bulb (d) a switch with a lid
9. 9.✏️ In a circuit diagram, which part is drawn as triangle, bar and arrows? (a) cell (b) capacitor (c) bulb (d) LED
10. 10.🔁 A bulb has two contacts. How many must be joined into the loop for it to glow? (a) none (b) only one (c) both of them (d) it does not matter
11. 11.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put an iron nail across the gap. Does the bulb glow? (a) No (b) Yes
12. 12.💡 In a parallel circuit, one bulb breaks. What happens to the others? (a) they explode (b) they keep glowing (c) they all go out (d) they get dimmer
13. 13.⚡ What does a school bell mainly change electricity into? (a) light (b) sound (c) movement (d) heat
14. 14.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
15. 15.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) parallel (b) series
16. 16.Which drawing is the symbol for a cell? (a) triangle, bar and arrows (b) a circle with M inside (c) a long and a short line (d) triangle against a bar
17. 17.💡 2 identical bulbs are joined in series with an 8 V battery (ideal wires). How many volts does each bulb get? =
18. 18.⚠️ Is it safe to take cells out after use? (a) safe (b) not safe
19. 19.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
20. 20.Which of these is not safe? (a) take cells out after use (b) dry your hands first (c) touch a fallen wire (d) keep drinks far away
21. 21.Which of these means the circuit is closed? (a) a wire has come loose (b) the bulb is unscrewed (c) the switch is ON (d) a wire is cut
22. 22.🔋 Does a generator give electricity or use electricity? (a) gives electricity (b) uses electricity
23. 23.Which of these is safe? (a) throw cells in a fire (b) use mains for a project (c) fly a kite near wires (d) fly kites in open fields
24. 24.Which of these is safe? (a) use a cable with cuts (b) use small battery cells (c) throw cells in a fire (d) touch a fallen wire
25. 25.⚠️ About how many volts do home sockets in India supply? (a) 9 V (b) 1.5 V (c) 12 V (d) 230 V
26. 26.⚠️ What protects home wiring by melting or tripping when too much current flows? (a) a bulb (b) a plug top (c) a long wire (d) a fuse or MCB
27. 27.⚠️ A cell gets hot when its + and − ends are joined by a bare wire. What is this called? (a) a parallel circuit (b) an open circuit (c) a safe circuit (d) a short circuit
28. 28.True or false: a rubber eraser is an insulator. (a) False (b) True
29. 29.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
30. 30.⚡ What does a mixer grinder mainly change electricity into? (a) light (b) heat (c) movement (d) sound
31. 31.💡 6 identical bulbs are joined in parallel (each on its own side-by-side path) with a battery and a closed switch on the main wire. Bulbs 2 and 6 are taken out of their holders. How many bulbs glow?
32. 32.⚡ What does an exhaust fan mainly change electricity into? (a) movement (b) heat (c) light (d) sound
33. 33.⚡ What does an LED lamp mainly change electricity into? (a) movement (b) light (c) heat (d) sound
34. 34.Which of these is a conductor? (a) a dry cork (b) a cotton thread (c) a metal paper clip (d) a plastic straw
35. 35.💡 3 identical bulbs are in parallel and each bulb has its own switch on its path. 1 of the switches is OFF and the rest are ON. How many bulbs glow?
36. 36.What does a tilt switch do? (a) slides side to side (b) closes when tipped over (c) flips up or down (d) springs back when let go
37. 37.⚡ Which tiny particles drift along a metal wire to carry the current? (a) photons (b) electrons (c) dust particles (d) water drops
38. 38.🔋 Does an air conditioner give electricity or use electricity? (a) gives electricity (b) uses electricity
39. 39.🔍 Which is the odd one out? (a) dry your hands first (b) poke things in a socket (c) open a phone charger (d) use mains for a project
40. 40.Which of these is true of a parallel circuit? (a) a break stops every bulb (b) each gets the full volts (c) one bulb out, all go out (d) a single current path

Free electronics lessons, practice and worksheets at talentjr.in/electronics-for-kids