Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 225 · 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.🔋 Does a water pump give electricity or use electricity? (a) gives electricity (b) uses electricity
2. 2.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) pull them by the hand (b) wait and watch (c) shout for an adult (d) pour water on them
3. 3.🔁 What do we call a circuit with a break in it? (a) a closed circuit (b) a full circuit (c) an open circuit (d) a series circuit
4. 4.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) motor (c) battery (d) resistor
5. 5.True or false: a toggle switch flips up or down. (a) False (b) True
6. 6.🔦 A circuit has a new cell, a good bulb and a switch that is OFF. All the wires are firmly joined. A gap in one wire is bridged by a rubber band. Does the bulb glow? (a) Yes (b) No
7. 7.🔋 2 identical 1.5 V cells are joined side by side in parallel (all + ends together, all − ends together). What is the voltage across them (in volts)? =
8. 8.⚠️ 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 short circuit (d) a safe circuit
9. 9.Which of these mainly gives out light? (a) a night lamp (b) a table fan (c) a rice cooker (d) a toaster
10. 10.💡 6 identical bulbs are in parallel and each one takes 0.2 A. What total current (in amperes) comes from the battery? =
11. 11.True or false: “many paths for current” is true of a series circuit. (a) True (b) False
12. 12.Which of these is not safe? (a) throw cells in a fire (b) stop if a part gets hot (c) take cells out after use (d) use small battery cells
13. 13.🔘 A cell and a bulb are joined to two side-by-side paths: path 1 has switches A and B one after another, path 2 has switch C. A is OFF, B is OFF and C is ON. Does the bulb glow? (a) Yes (b) No
14. 14.⚠️ Who should be with you when you build a circuit? (a) a younger child (b) a trusted adult (c) a stranger online (d) nobody
15. 15.True or false: on a cell, “the longer symbol line” means the + (positive) end. (a) True (b) False
16. 16.🔌 Is a steel coin a conductor or an insulator? (a) an insulator (b) a conductor
17. 17.⚡ A bicycle dynamo changes which kind of energy into electricity? (a) light energy (b) movement energy (c) sound energy (d) chemical energy
18. 18.⚠️ 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
19. 19.🔍 Which is the odd one out? (a) fly kites in open fields (b) use small battery cells (c) stop if a part gets hot (d) use mains for a project
20. 20.🔋 Cells joined + to − in a row (series) give … (a) the same voltage (b) no voltage (c) a bigger voltage (d) a smaller voltage
21. 21.Which of these is true of a series circuit? (a) each gets the full volts (b) many paths for current (c) used in house wiring (d) bulbs share the voltage
22. 22.Which drawing is the symbol for a battery? (a) one tall, one short bar (b) two or more cell symbols (c) a straight line (d) a line lifted at a gap
23. 23.🔗 Series or parallel circuit: “bulbs share the voltage”? (a) series (b) parallel
24. 24.Which of these mainly gives out heat? (a) a tube light (b) an electric drill (c) a water heater (d) a street light
25. 25.True or false: “bulbs share the voltage” is true of a series circuit. (a) True (b) False
26. 26.Which of these is true of a series circuit? (a) one out, the rest glow (b) used in house wiring (c) one bulb out, all go out (d) many paths for current
27. 27.True or false: “a single current path” is true of a series circuit. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) open a phone charger (b) touch a switch when wet (c) build with an adult near (d) touch a fallen wire
29. 29.🔘 Two switches are in series. When does the bulb glow? (a) when either is ON (b) when both are OFF (c) when both are ON (d) never
30. 30.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
31. 31.True or false: a brass key is an insulator. (a) False (b) True
32. 32.What does a reed switch do? (a) flips up or down (b) works only while pressed (c) closes near a magnet (d) closes when tipped over
33. 33.True or false: a reed switch closes when tipped over. (a) True (b) False
34. 34.🔁 Is the circuit closed or open if the loop is complete? (a) closed (b) open
35. 35.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
36. 36.True or false: if the bulb is unscrewed, the circuit is open and no current flows. (a) False (b) True
37. 37.Which of these is safe? (a) fly a kite near wires (b) touch a switch when wet (c) build with an adult near (d) climb an electric pole
38. 38.Which of these mainly gives out light? (a) a water heater (b) an electric kettle (c) a room heater (d) a street light
39. 39.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a brass key across the gap. Does the bulb glow? (a) No (b) Yes
40. 40.⚠️ Is it safe to fly a kite near wires? (a) safe (b) not safe

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