Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 63 · 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 amperes (A) is 560 mA? =
2. 2.📏 Which unit measures power? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
3. 3.True or false: the flow of charge is measured in watts (W). (a) True (b) False
4. 4.📏 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
5. 5.True or false: the voltmeter measures current. (a) False (b) True
6. 6.True or false: the ammeter is joined across a part. (a) False (b) True
7. 7.True or false: voltage is measured in volts (V). (a) False (b) True
8. 8.True or false: current is measured in watts (W). (a) True (b) False
9. 9.📏 How many amperes (A) is 170 mA? =
10. 10.📏 How many ohms (Ω) is 8.2 kΩ?
11. 11.True or false: the ammeter is joined in series. (a) False (b) True
12. 12.📏 In the water-pipe picture of a circuit, current is like … (a) the water pressure (b) a narrow pipe (c) the pipe colour (d) the flow of water
13. 13.True or false: the ammeter measures voltage. (a) False (b) True
14. 14.📏 How many amperes (A) is 1320 mA? =
15. 15.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
16. 16.📏 How many ohms (Ω) is 2.1 kΩ?
17. 17.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.True or false: the voltmeter is joined across a part. (a) False (b) True
19. 19.Which of these is measured in watts (W)? (a) the flow of charge (b) energy used each second (c) the push of a cell (d) how much a part resists
20. 20.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) energy used each second (c) voltage (d) how much a part resists
21. 21.Which of these is measured in volts (V)? (a) current (b) voltage (c) power (d) how much a part resists
22. 22.📏 Which unit measures voltage? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
23. 23.📏 Which unit measures resistance? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
24. 24.📏 How many amperes (A) is 500 mA? =
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
26. 26.Which of these is measured in ohms (Ω)? (a) power (b) resistance (c) current (d) the flow of charge
27. 27.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1000 (b) 1024 (c) 100 (d) 10
28. 28.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
29. 29.True or false: energy used each second is measured in watts (W). (a) False (b) True
30. 30.📏 How many amperes (A) is 100 mA? =
31. 31.📏 How many milliamperes (mA) is 0.62 A?
32. 32.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
33. 33.📏 How many watts (W) is 0.7 kW?
34. 34.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
35. 35.True or false: voltage is measured in ohms (Ω). (a) True (b) False
36. 36.True or false: the ammeter measures current. (a) False (b) True
37. 37.📏 How many milliamperes (mA) is 2.15 A?
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 1000 (d) 100
39. 39.📏 How many kilo-ohms (kΩ) is 6300 Ω? =
40. 40.📏 How many kilo-ohms (kΩ) is 9200 Ω? =

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