Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 646 · 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 kilowatts (kW) is 1250 W? =
2. 2.Which of these is measured in ohms (Ω)? (a) current (b) energy used each second (c) voltage (d) resistance
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
5. 5.📏 How many amperes (A) is 1500 mA? =
6. 6.True or false: the voltmeter measures voltage. (a) True (b) False
7. 7.True or false: the voltmeter is joined across a part. (a) True (b) False
8. 8.📏 How many amperes (A) is 790 mA? =
9. 9.True or false: the voltmeter is joined in series. (a) True (b) False
10. 10.📏 How many milliamperes (mA) make 1 ampere? (a) 60 (b) 100 (c) 1000 (d) 10
11. 11.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
12. 12.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
13. 13.📏 How many watts (W) is 1.5 kW?
14. 14.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) watt (W) (c) volt (V) (d) ampere (A)
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the pipe colour (c) the water pressure (d) the water tank lid
16. 16.📏 How many kilowatts (kW) is 2750 W? =
17. 17.True or false: the ammeter is joined across a part. (a) True (b) False
18. 18.📏 How many kilowatts (kW) is 450 W? =
19. 19.📏 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
20. 20.📏 How many amperes (A) is 1340 mA? =
21. 21.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
22. 22.📏 How many milliamperes (mA) is 1.87 A?
23. 23.📏 Which unit measures the flow of charge? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
24. 24.📏 Which unit measures energy used each second? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
25. 25.📏 Which unit measures power? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) energy used each second (c) the flow of charge (d) resistance
27. 27.📏 How many milliamperes (mA) is 2.06 A?
28. 28.True or false: the ammeter measures voltage. (a) False (b) True
29. 29.Which of these is measured in volts (V)? (a) how much a part resists (b) voltage (c) the flow of charge (d) energy used each second
30. 30.True or false: the push of a cell is measured in watts (W). (a) False (b) True
31. 31.📏 How many milliamperes (mA) is 2.39 A?
32. 32.Which of these is measured in amperes (A)? (a) power (b) the push of a cell (c) how much a part resists (d) current
33. 33.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
34. 34.📏 How many milliamperes (mA) is 1.85 A?
35. 35.📏 How many kilo-ohms (kΩ) is 6500 Ω? =
36. 36.True or false: the voltmeter measures current. (a) True (b) False
37. 37.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
38. 38.📏 How many kilo-ohms (kΩ) is 5200 Ω? =
39. 39.📏 How many ohms (Ω) is 8.5 kΩ?
40. 40.📏 How many ohms (Ω) is 2 kΩ?

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