Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 610 · 40 questions

Remember (Push, flow, resist): Voltage → volts (V), current → amperes (A), resistance → ohms (Ω), power → watts (W). milli (m) = ÷ 1000 and kilo (k) = × 1000: 250 mA = 0.25 A, 2.2 kΩ = 2200 Ω. Voltmeter across a part; ammeter in series.

1. 1.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
2. 2.True or false: the flow of charge is measured in ohms (Ω). (a) True (b) False
3. 3.True or false: the push of a cell is measured in amperes (A). (a) True (b) False
4. 4.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
5. 5.True or false: voltage is measured in watts (W). (a) False (b) True
6. 6.📏 How many amperes (A) is 740 mA? =
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
8. 8.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) voltage
9. 9.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 1000 (c) 10 (d) 100
10. 10.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
11. 11.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
12. 12.True or false: voltage is measured in volts (V). (a) True (b) False
13. 13.True or false: the ammeter is joined across a part. (a) False (b) True
14. 14.True or false: resistance is measured in amperes (A). (a) True (b) False
15. 15.📏 How many watts (W) is 3.2 kW?
16. 16.📏 How many kilo-ohms (kΩ) is 9800 Ω? =
17. 17.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
18. 18.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
21. 21.📏 How many amperes (A) is 1280 mA? =
22. 22.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
24. 24.📏 How many ohms (Ω) is 4.2 kΩ?
25. 25.📏 How many ohms (Ω) is 9.7 kΩ?
26. 26.📏 How many ohms (Ω) is 2.9 kΩ?
27. 27.📏 How many milliamperes (mA) is 2.32 A?
28. 28.True or false: the voltmeter is joined in series. (a) False (b) True
29. 29.True or false: the ammeter measures voltage. (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
31. 31.📏 Which unit measures voltage? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
32. 32.Which of these is measured in volts (V)? (a) how much a part resists (b) the flow of charge (c) current (d) voltage
33. 33.Which of these is measured in amperes (A)? (a) voltage (b) the flow of charge (c) the push of a cell (d) energy used each second
34. 34.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) the flow of charge (d) resistance
35. 35.📏 How many kilowatts (kW) is 3200 W? =
36. 36.True or false: resistance is measured in ohms (Ω). (a) True (b) False
37. 37.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
38. 38.True or false: how much a part resists is measured in volts (V). (a) True (b) False
39. 39.True or false: current is measured in amperes (A). (a) False (b) True
40. 40.True or false: the ammeter measures current. (a) False (b) True

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