Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 424 · 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 voltmeter measures voltage. (a) False (b) True
2. 2.True or false: the ammeter measures current. (a) False (b) True
3. 3.📏 How many ohms (Ω) is 0.7 kΩ?
4. 4.Which of these is measured in amperes (A)? (a) energy used each second (b) how much a part resists (c) current (d) the push of a cell
5. 5.📏 Which unit measures how much a part resists? (a) ohm (Ω) (b) ampere (A) (c) volt (V) (d) watt (W)
6. 6.📏 How many milliamperes (mA) is 2.15 A?
7. 7.📏 How many kilowatts (kW) is 3300 W? =
8. 8.True or false: voltage is measured in amperes (A). (a) True (b) False
9. 9.True or false: current is measured in amperes (A). (a) True (b) False
10. 10.📏 Which unit measures resistance? (a) ohm (Ω) (b) ampere (A) (c) watt (W) (d) volt (V)
11. 11.📏 How many milliamperes (mA) is 0.81 A?
12. 12.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) the push of a cell (d) power
13. 13.📏 How many amperes (A) is 2070 mA? =
14. 14.📏 How many amperes (A) is 2470 mA? =
15. 15.True or false: current is measured in watts (W). (a) True (b) False
16. 16.📏 How many milliamperes (mA) is 2.68 A?
17. 17.True or false: resistance is measured in ohms (Ω). (a) False (b) True
18. 18.📏 Which unit measures the flow of charge? (a) watt (W) (b) ohm (Ω) (c) ampere (A) (d) volt (V)
19. 19.📏 How many watts (W) is 0.1 kW?
20. 20.True or false: the push of a cell is measured in ohms (Ω). (a) True (b) False
21. 21.📏 How many ohms (Ω) is 8.6 kΩ?
22. 22.📏 How many ohms (Ω) is 7 kΩ?
23. 23.True or false: the voltmeter is joined across a part. (a) False (b) True
24. 24.Which of these is measured in volts (V)? (a) how much a part resists (b) power (c) the push of a cell (d) the flow of charge
25. 25.📏 How many amperes (A) is 2970 mA? =
26. 26.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
27. 27.True or false: the ammeter is joined across a part. (a) True (b) False
28. 28.📏 How many amperes (A) is 1860 mA? =
29. 29.📏 How many milliamperes (mA) make 1 ampere? (a) 10 (b) 60 (c) 100 (d) 1000
30. 30.📏 How many kilowatts (kW) is 650 W? =
31. 31.Which of these is measured in ohms (Ω)? (a) energy used each second (b) resistance (c) the flow of charge (d) the push of a cell
32. 32.📏 In the water-pipe picture of a circuit, voltage is like … (a) the water pressure (b) the tap handle (c) the pipe colour (d) the water tank lid
33. 33.Which of these is measured in volts (V)? (a) energy used each second (b) power (c) resistance (d) voltage
34. 34.True or false: the ammeter measures voltage. (a) False (b) True
35. 35.📏 How many milliamperes (mA) is 0.9 A?
36. 36.True or false: the voltmeter is joined in series. (a) True (b) False
37. 37.📏 How many milliamperes (mA) is 2.66 A?
38. 38.📏 How many kilowatts (kW) is 2650 W? =
39. 39.📏 How many kilo-ohms (kΩ) is 6900 Ω? =
40. 40.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) current (c) how much a part resists (d) voltage

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