Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 530 · 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.Which of these is measured in ohms (Ω)? (a) current (b) power (c) voltage (d) how much a part resists
2. 2.📏 How many milliamperes (mA) is 0.29 A?
3. 3.📏 How many milliamperes (mA) make 1 ampere? (a) 1000 (b) 60 (c) 100 (d) 10
4. 4.📏 How many ohms (Ω) is 0.4 kΩ?
5. 5.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 10 (b) 1000 (c) 100 (d) 1024
6. 6.📏 Voltmeter or ammeter: which one is joined in series? (a) voltmeter (b) ammeter
7. 7.True or false: resistance is measured in volts (V). (a) False (b) True
8. 8.True or false: the ammeter measures current. (a) False (b) True
9. 9.True or false: the push of a cell is measured in volts (V). (a) False (b) True
10. 10.True or false: current is measured in volts (V). (a) True (b) False
11. 11.True or false: the voltmeter is joined across a part. (a) False (b) True
12. 12.📏 How many watts (W) is 1 kW?
13. 13.📏 How many kilo-ohms (kΩ) is 1600 Ω? =
14. 14.📏 Which unit measures current? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
15. 15.True or false: the flow of charge is measured in volts (V). (a) True (b) False
16. 16.📏 How many watts (W) is 2.6 kW?
17. 17.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
18. 18.📏 In the water-pipe picture of a circuit, resistance is like … (a) a narrow pipe (b) the flow of water (c) a bigger tank (d) the water pressure
19. 19.📏 How many watts (W) is 1.9 kW?
20. 20.Which of these is measured in watts (W)? (a) energy used each second (b) resistance (c) voltage (d) how much a part resists
21. 21.📏 How many kilo-ohms (kΩ) is 3300 Ω? =
22. 22.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
23. 23.True or false: the push of a cell is measured in watts (W). (a) False (b) True
24. 24.📏 How many ohms (Ω) is 4.8 kΩ?
25. 25.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) resistance (d) voltage
26. 26.📏 How many amperes (A) is 170 mA? =
27. 27.📏 How many amperes (A) is 2080 mA? =
28. 28.📏 How many watts (W) is 4.5 kW?
29. 29.📏 Voltmeter or ammeter: which one measures current? (a) ammeter (b) voltmeter
30. 30.Which of these is measured in ohms (Ω)? (a) current (b) power (c) the push of a cell (d) resistance
31. 31.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
32. 32.📏 Which unit measures the flow of charge? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
33. 33.📏 How many watts (W) is 4.7 kW?
34. 34.📏 Which unit measures voltage? (a) ampere (A) (b) volt (V) (c) watt (W) (d) ohm (Ω)
35. 35.📏 Which unit measures energy used each second? (a) volt (V) (b) ohm (Ω) (c) watt (W) (d) ampere (A)
36. 36.Which of these is measured in amperes (A)? (a) the flow of charge (b) the push of a cell (c) how much a part resists (d) voltage
37. 37.📏 Which unit measures resistance? (a) volt (V) (b) watt (W) (c) ohm (Ω) (d) ampere (A)
38. 38.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
39. 39.True or false: the ammeter measures voltage. (a) True (b) False
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the tap handle (c) the water pressure (d) the water tank lid

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