Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 544 · 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.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) switch (b) bulb (c) battery (d) resistor
2. 2.🔘 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 ON, B is OFF and C is ON. Does the bulb glow? (a) No (b) Yes
3. 3.💡 A battery lights 3 identical bulbs joined in series. One more identical bulb is added in series. How do the bulbs glow now? (a) brighter (b) dimmer (c) the same
4. 4.🔋 What should you do with used-up cells? (a) bury them in soil (b) throw them in a fire (c) give them for recycling (d) cut them open
5. 5.🔘 When a switch is ON, the circuit is … (a) cut (b) closed (c) open (d) broken
6. 6.🔋 What is a battery? (a) a kind of bulb (b) a switch with a lid (c) two or more cells joined (d) one single wire
7. 7.⚠️ Who should be with you when you build a circuit? (a) a stranger online (b) a younger child (c) nobody (d) a trusted adult
8. 8.Which of these is true of a series circuit? (a) one out, the rest glow (b) a single current path (c) each gets the full volts (d) used in house wiring
9. 9.True or false: “a single current path” is true of a series circuit. (a) True (b) False
10. 10.💡 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 1 and 2 are taken out of their holders. How many bulbs glow?
11. 11.🔘 Two switches are in series. When does the bulb glow? (a) when both are ON (b) never (c) when either is ON (d) when both are OFF
12. 12.🔍 Which is the odd one out? (a) fly a kite near wires (b) stop if a part gets hot (c) fly kites in open fields (d) build with an adult near
13. 13.Which of these mainly gives out light? (a) a traffic signal (b) a room heater (c) a school bell (d) a mixer grinder
14. 14.💡 A battery lights 2 identical bulbs joined in parallel. One more identical bulb is added in parallel. How do the bulbs glow now? (a) the same (b) brighter (c) dimmer
15. 15.🔌 Which part of a screwdriver should an electrician hold? (a) the bare end (b) the plastic handle (c) the steel shaft (d) the metal tip
16. 16.🔋 Does a refrigerator give electricity or use electricity? (a) gives electricity (b) uses electricity
17. 17.💡 Why is house wiring done in parallel? (a) so all go off together (b) each gets full voltage (c) to make bulbs dim (d) to save copper only
18. 18.🔋 2 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
19. 19.⚡ What does an electric kettle mainly change electricity into? (a) heat (b) sound (c) movement (d) light
20. 20.True or false: if a wire has come loose, the circuit is open and no current flows. (a) False (b) True
21. 21.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) resistor (b) motor (c) capacitor (d) switch
22. 22.⚠️ Is it safe to dry your hands first? (a) safe (b) not safe
23. 23.🔌 Is a paper strip a conductor or an insulator? (a) an insulator (b) a conductor
24. 24.True or false: a woollen thread is an insulator. (a) True (b) False
25. 25.Which of these is a conductor? (a) a plastic ruler (b) a safety pin (c) a dry cork (d) a woollen thread
26. 26.True or false: to use a cable with cuts is not safe. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) a buzzer (b) a doorbell (c) a traffic signal (d) a loudspeaker
28. 28.⚠️ Which power source should children use for electronics projects? (a) a small battery pack (b) an inverter socket (c) a mains extension board (d) a wall socket
29. 29.Which of these means the circuit is open? (a) all wires are joined (b) the loop is complete (c) the switch is ON (d) a wire has come loose
30. 30.🔁 Is the circuit closed or open if a cell is taken out? (a) closed (b) open
31. 31.⚠️ Is it safe to take cells out after use? (a) not safe (b) safe
32. 32.🔁 What do we call a circuit with a break in it? (a) an open circuit (b) a closed circuit (c) a full circuit (d) a series circuit
33. 33.Which of these is true of a series circuit? (a) used in house wiring (b) one out, the rest glow (c) each gets the full volts (d) one bulb out, all go out
34. 34.What does a reed switch do? (a) springs back when let go (b) flips up or down (c) stays where you flip it (d) closes near a magnet
35. 35.What does a toggle switch do? (a) stays where you flip it (b) closes when tipped over (c) closes near a magnet (d) springs back when let go
36. 36.⚡ A cell changes stored chemical energy into which kind of energy? (a) electrical energy (b) nuclear energy (c) wind energy (d) sound energy
37. 37.🔋 3 identical 1.5 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
38. 38.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in parallel (b) not joined (c) by Wi-Fi (d) in series
39. 39.✏️ In a cell symbol, which line is the + terminal? (a) the shorter line (b) neither line (c) both lines (d) the longer line
40. 40.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel spoon across the gap. Does the bulb glow? (a) No (b) Yes

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