Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 592 · 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: the ammeter measures voltage. (a) True (b) False
2. 2.Which of these is measured in volts (V)? (a) resistance (b) the push of a cell (c) how much a part resists (d) energy used each second
3. 3.📏 How many milliamperes (mA) is 2.56 A?
4. 4.Which of these is measured in ohms (Ω)? (a) resistance (b) energy used each second (c) power (d) the push of a cell
5. 5.True or false: how much a part resists is measured in watts (W). (a) False (b) True
6. 6.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) a narrow pipe (c) the flow of water (d) a bigger tank
7. 7.Which of these is measured in amperes (A)? (a) power (b) current (c) voltage (d) how much a part resists
8. 8.📏 How many kilowatts (kW) is 2450 W? =
9. 9.📏 Which unit measures the flow of charge? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
10. 10.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
11. 11.📏 How many milliamperes (mA) is 2.22 A?
12. 12.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 1000 (d) 10
13. 13.True or false: the voltmeter is joined in series. (a) True (b) False
14. 14.Which of these is measured in volts (V)? (a) power (b) voltage (c) the flow of charge (d) current
15. 15.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
16. 16.📏 Which unit measures voltage? (a) ampere (A) (b) watt (W) (c) ohm (Ω) (d) volt (V)
17. 17.📏 Which unit measures the push of a cell? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
18. 18.📏 How many watts (W) is 0.1 kW?
19. 19.📏 Which unit measures resistance? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
20. 20.Which of these is measured in ohms (Ω)? (a) how much a part resists (b) energy used each second (c) the push of a cell (d) the flow of charge
21. 21.True or false: the voltmeter measures current. (a) True (b) False
22. 22.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
23. 23.True or false: the ammeter is joined across a part. (a) True (b) False
24. 24.True or false: the push of a cell is measured in volts (V). (a) False (b) True
25. 25.Which of these is measured in watts (W)? (a) how much a part resists (b) the flow of charge (c) current (d) power
26. 26.📏 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
27. 27.True or false: resistance is measured in ohms (Ω). (a) True (b) False
28. 28.📏 How many amperes (A) is 1480 mA? =
29. 29.📏 How many amperes (A) is 1180 mA? =
30. 30.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 1000 (c) 10 (d) 100
31. 31.True or false: the ammeter measures current. (a) True (b) False
32. 32.True or false: the voltmeter measures voltage. (a) False (b) True
33. 33.True or false: the ammeter is joined in series. (a) False (b) True
34. 34.📏 How many ohms (Ω) is 8.3 kΩ?
35. 35.📏 Which unit measures energy used each second? (a) ampere (A) (b) volt (V) (c) ohm (Ω) (d) watt (W)
36. 36.📏 How many amperes (A) is 1490 mA? =
37. 37.📏 Which unit measures current? (a) volt (V) (b) watt (W) (c) ampere (A) (d) ohm (Ω)
38. 38.📏 How many ohms (Ω) is 4.6 kΩ?
39. 39.📏 How many amperes (A) is 2200 mA? =
40. 40.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water tank lid (b) the tap handle (c) the water pressure (d) the pipe colour

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