Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 160 · 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.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
2. 2.True or false: the voltmeter measures current. (a) True (b) False
3. 3.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) the pipe colour (d) a narrow pipe
4. 4.📏 Voltmeter or ammeter: which one is joined in series? (a) ammeter (b) voltmeter
5. 5.📏 How many watts (W) is 1.4 kW?
6. 6.True or false: the ammeter measures voltage. (a) False (b) True
7. 7.📏 How many ohms (Ω) is 4.9 kΩ?
8. 8.Which of these is measured in watts (W)? (a) current (b) voltage (c) power (d) resistance
9. 9.True or false: the push of a cell is measured in volts (V). (a) True (b) False
10. 10.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
11. 11.📏 How many amperes (A) is 1630 mA? =
12. 12.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) current (d) energy used each second
13. 13.True or false: voltage is measured in watts (W). (a) True (b) False
14. 14.📏 How many milliamperes (mA) is 1.83 A?
15. 15.📏 How many amperes (A) is 2010 mA? =
16. 16.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
17. 17.True or false: the ammeter is joined in series. (a) True (b) False
18. 18.📏 How many watts (W) is 3.1 kW?
19. 19.True or false: the voltmeter measures voltage. (a) False (b) True
20. 20.True or false: how much a part resists is measured in volts (V). (a) True (b) False
21. 21.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
22. 22.Which of these is measured in ohms (Ω)? (a) current (b) the push of a cell (c) the flow of charge (d) how much a part resists
23. 23.True or false: how much a part resists is measured in amperes (A). (a) False (b) True
24. 24.📏 How many kilowatts (kW) is 4400 W? =
25. 25.📏 How many kilo-ohms (kΩ) is 5900 Ω? =
26. 26.📏 How many ohms (Ω) is 4.5 kΩ?
27. 27.📏 How many milliamperes (mA) is 1.67 A?
28. 28.📏 How many amperes (A) is 2600 mA? =
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 10 (c) 100 (d) 1000
30. 30.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
31. 31.📏 How many kilo-ohms (kΩ) is 600 Ω? =
32. 32.Which of these is measured in ohms (Ω)? (a) current (b) the flow of charge (c) the push of a cell (d) resistance
33. 33.True or false: the ammeter is joined across a part. (a) True (b) False
34. 34.📏 Which unit measures the flow of charge? (a) watt (W) (b) ampere (A) (c) volt (V) (d) ohm (Ω)
35. 35.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the pipe colour (c) the tap handle (d) the water pressure
36. 36.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
37. 37.📏 How many amperes (A) is 180 mA? =
38. 38.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
39. 39.True or false: the ammeter measures current. (a) False (b) True
40. 40.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True

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