Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 93 · 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.True or false: the ammeter measures voltage. (a) False (b) True
2. 2.📏 How many milliamperes (mA) is 1.84 A?
3. 3.📏 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
4. 4.True or false: the voltmeter is joined in series. (a) False (b) True
5. 5.📏 How many ohms (Ω) is 4.6 kΩ?
6. 6.📏 How many ohms (Ω) is 3.5 kΩ?
7. 7.Which of these is measured in amperes (A)? (a) how much a part resists (b) current (c) voltage (d) the push of a cell
8. 8.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
9. 9.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 100 (c) 1024 (d) 10
10. 10.True or false: the voltmeter is joined across a part. (a) True (b) False
11. 11.📏 How many ohms (Ω) is 6.8 kΩ?
12. 12.📏 How many milliamperes (mA) is 2.39 A?
13. 13.📏 How many watts (W) is 1 kW?
14. 14.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) current (d) energy used each second
15. 15.📏 How many kilo-ohms (kΩ) is 4900 Ω? =
16. 16.True or false: energy used each second is measured in ohms (Ω). (a) True (b) False
17. 17.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) the water pressure (d) a bigger tank
19. 19.📏 Which unit measures the push of a cell? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
20. 20.True or false: voltage is measured in ohms (Ω). (a) True (b) False
21. 21.True or false: current is measured in amperes (A). (a) False (b) True
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
23. 23.True or false: the ammeter is joined in series. (a) True (b) False
24. 24.📏 How many kilowatts (kW) is 300 W? =
25. 25.📏 How many milliamperes (mA) is 1.38 A?
26. 26.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
27. 27.📏 How many watts (W) is 4.7 kW?
28. 28.📏 Which unit measures the flow of charge? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
29. 29.📏 How many ohms (Ω) is 7.3 kΩ?
30. 30.True or false: voltage is measured in volts (V). (a) False (b) True
31. 31.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid
32. 32.True or false: the ammeter is joined across a part. (a) True (b) False
33. 33.True or false: resistance is measured in volts (V). (a) True (b) False
34. 34.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 10 (c) 60 (d) 100
36. 36.Which of these is measured in ohms (Ω)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) voltage
37. 37.📏 How many watts (W) is 1.8 kW?
38. 38.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
39. 39.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
40. 40.📏 How many watts (W) is 0.6 kW?

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