Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 873 · 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 550 W? =
2. 2.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 100 (c) 60 (d) 1000
3. 3.📏 How many ohms (Ω) is 6.7 kΩ?
4. 4.📏 Which unit measures voltage? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
5. 5.True or false: the ammeter measures voltage. (a) True (b) False
6. 6.📏 Which unit measures energy used each second? (a) ohm (Ω) (b) volt (V) (c) watt (W) (d) ampere (A)
7. 7.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
8. 8.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
9. 9.📏 How many kilo-ohms (kΩ) is 5100 Ω? =
10. 10.📏 Which unit measures power? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
11. 11.Which of these is measured in amperes (A)? (a) resistance (b) energy used each second (c) current (d) power
12. 12.📏 Which unit measures current? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
13. 13.True or false: the voltmeter is joined in series. (a) True (b) False
14. 14.📏 In the water-pipe picture of a circuit, resistance is like … (a) the flow of water (b) a narrow pipe (c) the water pressure (d) a bigger tank
15. 15.True or false: resistance is measured in amperes (A). (a) True (b) False
16. 16.Which of these is measured in ohms (Ω)? (a) current (b) how much a part resists (c) energy used each second (d) the flow of charge
17. 17.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the pipe colour (c) the water pressure (d) a narrow pipe
18. 18.Which of these is measured in watts (W)? (a) voltage (b) the push of a cell (c) resistance (d) power
19. 19.True or false: the ammeter is joined in series. (a) True (b) False
20. 20.Which of these is measured in volts (V)? (a) energy used each second (b) the push of a cell (c) power (d) current
21. 21.📏 How many ohms (Ω) is 4.7 kΩ?
22. 22.📏 How many kilo-ohms (kΩ) is 7600 Ω? =
23. 23.📏 How many kilo-ohms (kΩ) is 2800 Ω? =
24. 24.📏 How many watts (W) is 1.4 kW?
25. 25.📏 Which unit measures the flow of charge? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
26. 26.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
27. 27.Which of these is measured in ohms (Ω)? (a) voltage (b) resistance (c) the push of a cell (d) current
28. 28.True or false: the flow of charge is measured in volts (V). (a) True (b) False
29. 29.Which of these is measured in watts (W)? (a) current (b) voltage (c) energy used each second (d) the push of a cell
30. 30.Which of these is measured in amperes (A)? (a) energy used each second (b) resistance (c) the flow of charge (d) how much a part resists
31. 31.📏 Which unit measures how much a part resists? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
32. 32.True or false: the ammeter is joined across a part. (a) False (b) True
33. 33.📏 How many kilowatts (kW) is 900 W? =
34. 34.📏 Which unit measures resistance? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
35. 35.📏 How many milliamperes (mA) is 1.47 A?
36. 36.📏 How many amperes (A) is 810 mA? =
37. 37.📏 How many watts (W) is 4.9 kW?
38. 38.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 100 (b) 1024 (c) 1000 (d) 10
39. 39.True or false: current is measured in volts (V). (a) False (b) True
40. 40.📏 How many kilo-ohms (kΩ) is 4500 Ω? =

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