Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 690 · 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.📏 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
2. 2.📏 Which unit measures how much a part resists? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
3. 3.True or false: energy used each second is measured in volts (V). (a) False (b) True
4. 4.True or false: resistance is measured in amperes (A). (a) True (b) False
5. 5.📏 Which unit measures voltage? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
6. 6.📏 How many watts (W) is 3.6 kW?
7. 7.📏 How many milliamperes (mA) is 0.1 A?
8. 8.📏 How many kilowatts (kW) is 4050 W? =
9. 9.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) how much a part resists (d) voltage
10. 10.True or false: the voltmeter is joined in series. (a) False (b) True
11. 11.📏 How many amperes (A) is 1460 mA? =
12. 12.📏 How many amperes (A) is 2710 mA? =
13. 13.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
14. 14.Which of these is measured in volts (V)? (a) voltage (b) how much a part resists (c) resistance (d) current
15. 15.📏 Which unit measures the push of a cell? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
16. 16.Which of these is measured in ohms (Ω)? (a) the push of a cell (b) energy used each second (c) voltage (d) resistance
17. 17.📏 How many milliamperes (mA) is 2.81 A?
18. 18.True or false: the push of a cell is measured in volts (V). (a) False (b) True
19. 19.📏 How many milliamperes (mA) is 2.2 A?
20. 20.📏 How many watts (W) is 0.1 kW?
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
22. 22.📏 Which unit measures energy used each second? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
23. 23.True or false: the voltmeter measures current. (a) False (b) True
24. 24.True or false: the voltmeter is joined across a part. (a) True (b) False
25. 25.📏 How many kilo-ohms (kΩ) is 6400 Ω? =
26. 26.True or false: power is measured in ohms (Ω). (a) True (b) False
27. 27.True or false: the flow of charge is measured in ohms (Ω). (a) False (b) True
28. 28.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
29. 29.📏 How many ohms make 1 kilo-ohm (kΩ)? (a) 1024 (b) 100 (c) 10 (d) 1000
30. 30.📏 Which unit measures resistance? (a) ampere (A) (b) watt (W) (c) volt (V) (d) ohm (Ω)
31. 31.📏 How many milliamperes (mA) is 0.14 A?
32. 32.📏 How many watts (W) is 1.3 kW?
33. 33.True or false: current is measured in watts (W). (a) True (b) False
34. 34.True or false: current is measured in amperes (A). (a) False (b) True
35. 35.📏 How many milliamperes (mA) make 1 ampere? (a) 100 (b) 60 (c) 10 (d) 1000
36. 36.📏 How many kilo-ohms (kΩ) is 5500 Ω? =
37. 37.True or false: the flow of charge is measured in volts (V). (a) True (b) False
38. 38.True or false: the ammeter measures voltage. (a) False (b) True
39. 39.True or false: the ammeter is joined in series. (a) True (b) False
40. 40.True or false: current is measured in ohms (Ω). (a) True (b) False

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