Electronics Worksheet: Electricity Basics Test

Electronics lesson 10: Part 1 test: electricity basics · Set 187 · 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.Which of these is true of a series circuit? (a) each gets the full volts (b) a single current path (c) one out, the rest glow (d) many paths for current
2. 2.⚡ What do we call a flow of electric charge through a wire? (a) friction (b) sound (c) a magnet (d) electric current
3. 3.🔋 A 3 V battery and three 1.5 V cells are joined in series, all facing the same way. What is the total voltage (in volts)? =
4. 4.Which of these is an insulator? (a) a graphite rod (b) an iron nail (c) aluminium foil (d) a cotton thread
5. 5.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 1 is taken out of its holder. How many bulbs glow?
6. 6.True or false: a slide switch slides side to side. (a) True (b) False
7. 7.🔋 On a cell, does “the longer symbol line” mean the + end or the − end? (a) + (positive) (b) − (negative)
8. 8.🔁 Is the circuit closed or open if the switch is ON? (a) closed (b) open
9. 9.💡 6 identical bulbs are in parallel and each bulb has its own switch on its path. 4 of the switches are OFF and the rest are ON. How many bulbs glow?
10. 10.🔍 Which is the odd one out? (a) use mains for a project (b) touch a switch when wet (c) climb an electric pole (d) take cells out after use
11. 11.🔋 Does an air conditioner give electricity or use electricity? (a) uses electricity (b) gives electricity
12. 12.⚠️ Is it safe to open a phone charger? (a) not safe (b) safe
13. 13.True or false: “a single current path” is true of a series circuit. (a) False (b) True
14. 14.⚡ A fan changes electrical energy mainly into which kind of energy? (a) light energy (b) sound energy (c) chemical energy (d) movement energy
15. 15.🔍 Which is the odd one out? (a) a street light (b) an exhaust fan (c) an electric toy car (d) a mixer grinder
16. 16.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) the longer line (c) the shorter line (d) neither line
17. 17.🔁 What must there be for a current to flow? (a) one loose end (b) a broken path (c) a complete loop (d) a plastic gap
18. 18.🔘 A bulb and a cell are joined through 6 switches one after another in a single loop (series). What is the smallest number of switches that must be ON to light the bulb?
19. 19.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
20. 20.🔘 A cell, a bulb and switches A and B are joined one after another in a single loop (series). A is OFF and B is ON. Does the bulb glow? (a) No (b) Yes
21. 21.What does a slide switch do? (a) springs back when let go (b) closes near a magnet (c) slides side to side (d) stays where you flip it
22. 22.🔁 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
23. 23.⚡ A solar panel changes which kind of energy into electricity? (a) chemical energy (b) sound energy (c) light energy (d) wind energy
24. 24.🔍 Which is the odd one out? (a) fly kites in open fields (b) dry your hands first (c) throw cells in a fire (d) keep drinks far away
25. 25.True or false: a reed switch works only while pressed. (a) False (b) True
26. 26.⚡ Which tiny particles drift along a metal wire to carry the current? (a) dust particles (b) electrons (c) photons (d) water drops
27. 27.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) capacitor (b) voltmeter (c) junction (d) diode
28. 28.⚠️ Someone is getting a shock and is still touching a wire. What should you do? (a) wait and watch (b) pour water on them (c) shout for an adult (d) pull them by the hand
29. 29.💡 Old festival light strings went fully dark when one bulb failed. How were they joined? (a) in series (b) not joined (c) by Wi-Fi (d) in parallel
30. 30.🔋 3 identical 2 V cells are joined in series (+ of one cell to − of the next). What is the total voltage (in volts)? =
31. 31.True or false: to poke things in a socket is not safe. (a) True (b) False
32. 32.🔋 Does a power station give electricity or use electricity? (a) gives electricity (b) uses electricity
33. 33.🔦 A tester circuit has a new cell, a good bulb and wires with a gap between two clips. We put a steel coin across the gap. Does the bulb glow? (a) Yes (b) No
34. 34.🔗 Series or parallel circuit: “each gets the full volts”? (a) series (b) parallel
35. 35.Which of these is true of a parallel circuit? (a) one bulb out, all go out (b) each gets the full volts (c) bulbs share the voltage (d) a single current path
36. 36.💡 4 identical bulbs are joined in series with a battery and a closed switch on the main wire. Bulb 4 is taken out of its holder. Does bulb 3 glow? (a) Yes (b) No
37. 37.🔗 Series or parallel circuit: “a single current path”? (a) parallel (b) series
38. 38.🔁 Is the circuit closed or open if the loop is complete? (a) open (b) closed
39. 39.Which of these mainly makes movement? (a) a siren (b) a night lamp (c) a loudspeaker (d) a ceiling fan
40. 40.💡 2 identical bulbs are joined in series with a 5 V battery (ideal wires). How many volts does each bulb get? =

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