Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 590 · 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: current is measured in amperes (A). (a) True (b) False
2. 2.📏 How many watts (W) is 1.1 kW?
3. 3.📏 How many milliamperes (mA) is 2.3 A?
4. 4.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) watt (W) (d) volt (V)
5. 5.📏 In the water-pipe picture of a circuit, voltage is like … (a) the tap handle (b) the water pressure (c) the pipe colour (d) the water tank lid
6. 6.📏 How many kilowatts (kW) is 4250 W? =
7. 7.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1024 (c) 100 (d) 1000
8. 8.True or false: the ammeter measures voltage. (a) True (b) False
9. 9.📏 How many ohms (Ω) is 7.2 kΩ?
10. 10.📏 How many kilowatts (kW) is 1550 W? =
11. 11.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
12. 12.📏 How many kilowatts (kW) is 3100 W? =
13. 13.📏 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
14. 14.📏 How many kilo-ohms (kΩ) is 6000 Ω? =
15. 15.True or false: the voltmeter measures voltage. (a) True (b) False
16. 16.Which of these is measured in amperes (A)? (a) the flow of charge (b) resistance (c) the push of a cell (d) energy used each second
17. 17.True or false: the flow of charge is measured in amperes (A). (a) True (b) False
18. 18.True or false: the voltmeter is joined across a part. (a) False (b) True
19. 19.📏 Which unit measures how much a part resists? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
20. 20.📏 How many milliamperes (mA) is 1.98 A?
21. 21.Which of these is measured in watts (W)? (a) the push of a cell (b) how much a part resists (c) current (d) power
22. 22.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) watt (W) (c) ampere (A) (d) volt (V)
23. 23.📏 Voltmeter or ammeter: which one is joined across a part? (a) voltmeter (b) ammeter
24. 24.True or false: energy used each second is measured in watts (W). (a) True (b) False
25. 25.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
26. 26.📏 How many amperes (A) is 2900 mA? =
27. 27.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
28. 28.📏 How many ohms (Ω) is 2.1 kΩ?
29. 29.Which of these is measured in amperes (A)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
30. 30.📏 Which unit measures power? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
31. 31.📏 How many watts (W) is 0.6 kW?
32. 32.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
33. 33.📏 How many ohms (Ω) is 5.8 kΩ?
34. 34.📏 How many kilowatts (kW) is 4600 W? =
35. 35.📏 How many ohms (Ω) is 2.3 kΩ?
36. 36.📏 How many watts (W) is 0.5 kW?
37. 37.Which of these is measured in ohms (Ω)? (a) current (b) voltage (c) how much a part resists (d) the push of a cell
38. 38.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 1000 (c) 60 (d) 10
39. 39.True or false: the ammeter measures current. (a) True (b) False
40. 40.📏 How many amperes (A) is 2870 mA? =

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