Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 7 · 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.📏 How many kilo-ohms (kΩ) is 1400 Ω? =
2. 2.📏 Which unit measures resistance? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
3. 3.True or false: the ammeter measures voltage. (a) True (b) False
4. 4.📏 How many amperes (A) is 2010 mA? =
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water tank lid (c) the tap handle (d) the water pressure
6. 6.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 100 (c) 60 (d) 10
7. 7.True or false: the voltmeter is joined in series. (a) False (b) True
8. 8.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
9. 9.📏 How many amperes (A) is 1600 mA? =
10. 10.📏 In the water-pipe picture of a circuit, resistance is like … (a) a bigger tank (b) a narrow pipe (c) the flow of water (d) the water pressure
11. 11.True or false: voltage is measured in amperes (A). (a) True (b) False
12. 12.📏 How many kilo-ohms (kΩ) is 3000 Ω? =
13. 13.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
14. 14.📏 How many milliamperes (mA) is 0.34 A?
15. 15.📏 Which unit measures voltage? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
16. 16.📏 How many watts (W) is 2.4 kW?
17. 17.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
18. 18.📏 How many amperes (A) is 2090 mA? =
19. 19.📏 How many milliamperes (mA) is 0.72 A?
20. 20.Which of these is measured in volts (V)? (a) how much a part resists (b) the push of a cell (c) current (d) energy used each second
21. 21.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the flow of water (c) the pipe colour (d) the water pressure
22. 22.Which of these is measured in volts (V)? (a) voltage (b) current (c) energy used each second (d) resistance
23. 23.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 1024 (d) 100
24. 24.📏 How many milliamperes (mA) is 2.85 A?
25. 25.📏 How many watts (W) is 3.9 kW?
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.True or false: the flow of charge is measured in volts (V). (a) False (b) True
28. 28.True or false: current is measured in volts (V). (a) True (b) False
29. 29.True or false: power is measured in amperes (A). (a) False (b) True
30. 30.True or false: resistance is measured in amperes (A). (a) False (b) True
31. 31.📏 How many amperes (A) is 2880 mA? =
32. 32.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) how much a part resists (d) voltage
33. 33.True or false: resistance is measured in ohms (Ω). (a) True (b) False
34. 34.📏 How many ohms (Ω) is 4.6 kΩ?
35. 35.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
36. 36.📏 How many milliamperes (mA) is 0.76 A?
37. 37.True or false: the ammeter is joined across a part. (a) True (b) False
38. 38.True or false: how much a part resists is measured in watts (W). (a) False (b) True
39. 39.📏 How many watts (W) is 0.8 kW?
40. 40.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)

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