Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 969 · 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 510 mA? =
2. 2.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
3. 3.📏 Which unit measures how much a part resists? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
4. 4.📏 How many kilo-ohms (kΩ) is 3100 Ω? =
5. 5.True or false: the ammeter is joined in series. (a) True (b) False
6. 6.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
7. 7.📏 How many ohms (Ω) is 2.7 kΩ?
8. 8.True or false: the voltmeter is joined in series. (a) False (b) True
9. 9.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
10. 10.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 10 (c) 1000 (d) 1024
11. 11.📏 Which unit measures the push of a cell? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
12. 12.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
13. 13.📏 Which unit measures current? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
14. 14.Which of these is measured in ohms (Ω)? (a) resistance (b) current (c) voltage (d) the push of a cell
15. 15.Which of these is measured in amperes (A)? (a) current (b) the push of a cell (c) energy used each second (d) power
16. 16.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) voltage (c) current (d) energy used each second
17. 17.📏 How many milliamperes (mA) is 2.68 A?
18. 18.True or false: the push of a cell is measured in volts (V). (a) True (b) False
19. 19.📏 How many amperes (A) is 730 mA? =
20. 20.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
21. 21.📏 How many ohms (Ω) is 0.8 kΩ?
22. 22.📏 How many watts (W) is 0.5 kW?
23. 23.📏 How many kilo-ohms (kΩ) is 500 Ω? =
24. 24.📏 How many ohms (Ω) is 9.8 kΩ?
25. 25.📏 How many watts (W) is 4.9 kW?
26. 26.Which of these is measured in watts (W)? (a) energy used each second (b) how much a part resists (c) resistance (d) the push of a cell
27. 27.📏 How many milliamperes (mA) is 1.3 A?
28. 28.True or false: voltage is measured in amperes (A). (a) True (b) False
29. 29.True or false: the ammeter is joined across a part. (a) True (b) False
30. 30.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) a bigger tank (d) the water pressure
31. 31.📏 How many milliamperes (mA) is 1.45 A?
32. 32.True or false: the ammeter measures current. (a) True (b) False
33. 33.📏 How many kilo-ohms (kΩ) is 1100 Ω? =
34. 34.📏 How many milliamperes (mA) is 0.41 A?
35. 35.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
36. 36.Which of these is measured in watts (W)? (a) resistance (b) the flow of charge (c) power (d) the push of a cell
37. 37.📏 How many milliamperes (mA) is 2.66 A?
38. 38.📏 How many kilowatts (kW) is 950 W? =
39. 39.📏 How many watts (W) is 3.3 kW?
40. 40.📏 How many kilo-ohms (kΩ) is 9800 Ω? =

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