Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 645 · 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 milliamperes (mA) is 2.1 A?
2. 2.📏 Which unit measures the push of a cell? (a) ohm (Ω) (b) volt (V) (c) ampere (A) (d) watt (W)
3. 3.📏 Voltmeter or ammeter: which one measures voltage? (a) ammeter (b) voltmeter
4. 4.📏 How many milliamperes (mA) is 2.05 A?
5. 5.📏 How many kilowatts (kW) is 3000 W? =
6. 6.📏 Which unit measures voltage? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
7. 7.True or false: power is measured in ohms (Ω). (a) False (b) True
8. 8.📏 How many milliamperes (mA) is 0.83 A?
9. 9.True or false: the flow of charge is measured in amperes (A). (a) False (b) True
10. 10.📏 How many watts (W) is 0.9 kW?
11. 11.📏 Voltmeter or ammeter: which one is joined across a part? (a) ammeter (b) voltmeter
12. 12.📏 How many kilo-ohms (kΩ) is 2600 Ω? =
13. 13.True or false: the ammeter measures current. (a) False (b) True
14. 14.📏 In the water-pipe picture of a circuit, current is like … (a) a narrow pipe (b) the water pressure (c) the flow of water (d) the pipe colour
15. 15.📏 In the water-pipe picture of a circuit, voltage is like … (a) the pipe colour (b) the water pressure (c) the tap handle (d) the water tank lid
16. 16.📏 How many milliamperes (mA) is 1.94 A?
17. 17.True or false: how much a part resists is measured in watts (W). (a) False (b) True
18. 18.True or false: the ammeter is joined in series. (a) False (b) True
19. 19.Which of these is measured in volts (V)? (a) voltage (b) current (c) power (d) how much a part resists
20. 20.True or false: the voltmeter measures voltage. (a) True (b) False
21. 21.📏 How many amperes (A) is 460 mA? =
22. 22.📏 Which unit measures how much a part resists? (a) volt (V) (b) ohm (Ω) (c) ampere (A) (d) watt (W)
23. 23.Which of these is measured in amperes (A)? (a) energy used each second (b) the flow of charge (c) the push of a cell (d) voltage
24. 24.Which of these is measured in amperes (A)? (a) the push of a cell (b) how much a part resists (c) power (d) current
25. 25.True or false: voltage is measured in volts (V). (a) False (b) True
26. 26.Which of these is measured in watts (W)? (a) the push of a cell (b) voltage (c) how much a part resists (d) energy used each second
27. 27.📏 Voltmeter or ammeter: which one measures current? (a) voltmeter (b) ammeter
28. 28.📏 Which unit measures the flow of charge? (a) watt (W) (b) volt (V) (c) ohm (Ω) (d) ampere (A)
29. 29.True or false: resistance is measured in watts (W). (a) True (b) False
30. 30.📏 How many kilowatts (kW) is 1050 W? =
31. 31.📏 How many amperes (A) is 960 mA? =
32. 32.Which of these is measured in volts (V)? (a) energy used each second (b) how much a part resists (c) the push of a cell (d) current
33. 33.True or false: the ammeter is joined across a part. (a) False (b) True
34. 34.📏 Which unit measures current? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
35. 35.Which of these is measured in ohms (Ω)? (a) energy used each second (b) voltage (c) resistance (d) power
36. 36.True or false: the push of a cell is measured in volts (V). (a) True (b) False
37. 37.📏 How many amperes (A) is 1410 mA? =
38. 38.📏 How many amperes (A) is 2770 mA? =
39. 39.📏 Which unit measures power? (a) volt (V) (b) ampere (A) (c) ohm (Ω) (d) watt (W)
40. 40.True or false: power is measured in watts (W). (a) False (b) True

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