Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 694 · 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.📏 Which unit measures energy used each second? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
2. 2.📏 Which unit measures how much a part resists? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
3. 3.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
6. 6.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False
7. 7.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
8. 8.📏 How many amperes (A) is 100 mA? =
9. 9.📏 How many amperes (A) is 2090 mA? =
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
11. 11.📏 How many kilowatts (kW) is 4300 W? =
12. 12.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
13. 13.Which of these is measured in ohms (Ω)? (a) current (b) resistance (c) voltage (d) the flow of charge
14. 14.True or false: voltage is measured in watts (W). (a) False (b) True
15. 15.📏 How many watts (W) is 0.9 kW?
16. 16.📏 Which unit measures current? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
17. 17.Which of these is measured in watts (W)? (a) the push of a cell (b) current (c) resistance (d) power
18. 18.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
19. 19.True or false: the voltmeter measures voltage. (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) power (b) voltage (c) how much a part resists (d) resistance
21. 21.True or false: the ammeter is joined in series. (a) True (b) False
22. 22.📏 How many watts (W) is 0.2 kW?
23. 23.True or false: the ammeter measures current. (a) True (b) False
24. 24.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) voltage (c) the push of a cell (d) how much a part resists
25. 25.📏 How many watts (W) is 3.2 kW?
26. 26.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the water tank lid (d) the pipe colour
27. 27.📏 How many watts (W) is 3 kW?
28. 28.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 100 (d) 10
29. 29.True or false: energy used each second is measured in volts (V). (a) False (b) True
30. 30.True or false: energy used each second is measured in amperes (A). (a) True (b) False
31. 31.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
32. 32.True or false: voltage is measured in ohms (Ω). (a) False (b) True
33. 33.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
34. 34.📏 How many amperes (A) is 1410 mA? =
35. 35.📏 How many amperes (A) is 290 mA? =
36. 36.Which of these is measured in amperes (A)? (a) how much a part resists (b) the push of a cell (c) the flow of charge (d) energy used each second
37. 37.📏 How many milliamperes (mA) is 0.78 A?
38. 38.True or false: the ammeter is joined across a part. (a) True (b) False
39. 39.📏 How many amperes (A) is 1280 mA? =
40. 40.📏 How many milliamperes (mA) is 1.88 A?

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