Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 39 · 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 resistance? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
2. 2.Which of these is measured in volts (V)? (a) current (b) the push of a cell (c) the flow of charge (d) power
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
4. 4.True or false: the ammeter is joined across a part. (a) False (b) True
5. 5.📏 How many milliamperes (mA) is 0.6 A?
6. 6.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
7. 7.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
8. 8.True or false: the ammeter is joined in series. (a) True (b) False
9. 9.📏 How many milliamperes (mA) is 1.69 A?
10. 10.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
11. 11.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
12. 12.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
14. 14.📏 How many ohms (Ω) is 3.7 kΩ?
15. 15.True or false: resistance is measured in ohms (Ω). (a) False (b) True
16. 16.True or false: voltage is measured in volts (V). (a) False (b) True
17. 17.📏 How many milliamperes (mA) is 2.89 A?
18. 18.📏 How many kilowatts (kW) is 450 W? =
19. 19.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) how much a part resists (d) voltage
20. 20.📏 Which unit measures the flow of charge? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
21. 21.📏 How many ohms (Ω) is 4.3 kΩ?
22. 22.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) voltage (d) resistance
23. 23.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
24. 24.📏 How many ohms (Ω) is 0.5 kΩ?
25. 25.📏 How many milliamperes (mA) is 0.62 A?
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) how much a part resists (d) resistance
27. 27.True or false: the voltmeter is joined in series. (a) False (b) True
28. 28.📏 How many amperes (A) is 1650 mA? =
29. 29.Which of these is measured in amperes (A)? (a) how much a part resists (b) the flow of charge (c) the push of a cell (d) resistance
30. 30.📏 How many amperes (A) is 960 mA? =
31. 31.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) how much a part resists
32. 32.Which of these is measured in watts (W)? (a) power (b) the flow of charge (c) current (d) resistance
33. 33.📏 Which unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
34. 34.True or false: current is measured in watts (W). (a) True (b) False
35. 35.📏 How many kilowatts (kW) is 850 W? =
36. 36.📏 How many watts (W) is 0.9 kW?
37. 37.📏 How many milliamperes (mA) is 2.65 A?
38. 38.📏 How many kilowatts (kW) is 150 W? =
39. 39.True or false: energy used each second is measured in watts (W). (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water tank lid (d) the water pressure

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