Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 272 · 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 power? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
2. 2.📏 How many kilo-ohms (kΩ) is 5300 Ω? =
3. 3.True or false: resistance is measured in volts (V). (a) True (b) False
4. 4.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the water tank lid (c) the pipe colour (d) the tap handle
5. 5.True or false: the ammeter measures current. (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 How many watts (W) is 3.4 kW?
8. 8.Which of these is measured in watts (W)? (a) current (b) power (c) voltage (d) how much a part resists
9. 9.📏 How many amperes (A) is 2770 mA? =
10. 10.📏 How many kilo-ohms (kΩ) is 3800 Ω? =
11. 11.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
13. 13.Which of these is measured in volts (V)? (a) the flow of charge (b) voltage (c) current (d) energy used each second
14. 14.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
15. 15.True or false: energy used each second is measured in amperes (A). (a) True (b) False
16. 16.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1000 (c) 1024 (d) 10
17. 17.📏 Which unit measures the push of a cell? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
18. 18.True or false: the ammeter is joined in series. (a) True (b) False
19. 19.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
20. 20.True or false: the voltmeter measures voltage. (a) False (b) True
21. 21.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
22. 22.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) resistance (c) the flow of charge (d) power
23. 23.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) current (d) the flow of charge
24. 24.📏 How many milliamperes (mA) is 1.64 A?
25. 25.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
26. 26.True or false: the voltmeter is joined in series. (a) True (b) False
27. 27.True or false: power is measured in volts (V). (a) True (b) False
28. 28.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
29. 29.📏 How many milliamperes (mA) is 0.28 A?
30. 30.📏 How many milliamperes (mA) is 2.44 A?
31. 31.📏 How many amperes (A) is 830 mA? =
32. 32.True or false: the ammeter measures voltage. (a) True (b) False
33. 33.Which of these is measured in amperes (A)? (a) the flow of charge (b) power (c) energy used each second (d) how much a part resists
34. 34.📏 How many milliamperes (mA) is 0.67 A?
35. 35.📏 How many watts (W) is 3.7 kW?
36. 36.📏 How many watts (W) is 4.7 kW?
37. 37.📏 How many ohms (Ω) is 1.8 kΩ?
38. 38.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
39. 39.📏 How many ohms (Ω) is 6.2 kΩ?
40. 40.True or false: how much a part resists is measured in ohms (Ω). (a) True (b) False

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