Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 463 · 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) ammeter (b) voltmeter
2. 2.📏 How many watts (W) is 4.5 kW?
3. 3.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many amperes (A) is 2630 mA? =
5. 5.📏 Which unit measures voltage? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
6. 6.📏 How many watts (W) is 3.6 kW?
7. 7.True or false: how much a part resists is measured in volts (V). (a) False (b) True
8. 8.📏 Which unit measures current? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
9. 9.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the tap handle (d) the pipe colour
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
11. 11.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
12. 12.True or false: the voltmeter measures voltage. (a) True (b) False
13. 13.True or false: how much a part resists is measured in watts (W). (a) False (b) True
14. 14.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
15. 15.True or false: the voltmeter measures current. (a) False (b) True
16. 16.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
17. 17.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
18. 18.True or false: current is measured in amperes (A). (a) False (b) True
19. 19.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) how much a part resists (d) power
20. 20.📏 How many amperes (A) is 1130 mA? =
21. 21.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
22. 22.📏 How many watts (W) is 3.2 kW?
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
24. 24.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
25. 25.True or false: the ammeter measures current. (a) False (b) True
26. 26.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
27. 27.📏 How many kilo-ohms (kΩ) is 5700 Ω? =
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.True or false: voltage is measured in amperes (A). (a) True (b) False
30. 30.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
31. 31.📏 How many kilo-ohms (kΩ) is 2900 Ω? =
32. 32.True or false: current is measured in ohms (Ω). (a) False (b) True
33. 33.📏 How many ohms (Ω) is 3.3 kΩ?
34. 34.True or false: the ammeter measures voltage. (a) True (b) False
35. 35.True or false: the voltmeter is joined across a part. (a) True (b) False
36. 36.📏 How many milliamperes (mA) is 1.29 A?
37. 37.📏 How many kilo-ohms (kΩ) is 6800 Ω? =
38. 38.True or false: resistance is measured in ohms (Ω). (a) True (b) False
39. 39.Which of these is measured in volts (V)? (a) energy used each second (b) voltage (c) current (d) the flow of charge
40. 40.📏 How many watts (W) is 3 kW?

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