Electronics Worksheet: Voltage, Current and Resistance

Electronics lesson 11: Voltage, current and resistance · Set 885 · 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 unit measures energy used each second? (a) volt (V) (b) ampere (A) (c) watt (W) (d) ohm (Ω)
2. 2.📏 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
3. 3.📏 How many kilo-ohms (kΩ) is 4800 Ω? =
4. 4.📏 In the water-pipe picture of a circuit, current is like … (a) the flow of water (b) the water pressure (c) a narrow pipe (d) the pipe colour
5. 5.📏 Which unit measures resistance? (a) watt (W) (b) volt (V) (c) ampere (A) (d) ohm (Ω)
6. 6.True or false: current is measured in amperes (A). (a) False (b) True
7. 7.📏 How many milliamperes (mA) is 1.65 A?
8. 8.📏 Which unit measures power? (a) ampere (A) (b) ohm (Ω) (c) volt (V) (d) watt (W)
9. 9.Which of these is measured in watts (W)? (a) the push of a cell (b) the flow of charge (c) power (d) current
10. 10.True or false: the ammeter measures current. (a) True (b) False
11. 11.📏 Which unit measures voltage? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
12. 12.📏 Which unit measures current? (a) watt (W) (b) ampere (A) (c) ohm (Ω) (d) volt (V)
13. 13.Which of these is measured in watts (W)? (a) current (b) the flow of charge (c) energy used each second (d) how much a part resists
14. 14.📏 How many kilowatts (kW) is 4850 W? =
15. 15.True or false: the flow of charge is measured in watts (W). (a) False (b) True
16. 16.True or false: the ammeter is joined across a part. (a) True (b) False
17. 17.True or false: the ammeter measures voltage. (a) True (b) False
18. 18.📏 How many amperes (A) is 1480 mA? =
19. 19.📏 How many ohms (Ω) is 10 kΩ?
20. 20.📏 In the water-pipe picture of a circuit, resistance is like … (a) the water pressure (b) the flow of water (c) a bigger tank (d) a narrow pipe
21. 21.📏 Voltmeter or ammeter: which one measures voltage? (a) voltmeter (b) ammeter
22. 22.True or false: the voltmeter is joined in series. (a) False (b) True
23. 23.📏 How many milliamperes (mA) is 1.28 A?
24. 24.📏 How many ohms (Ω) is 3.3 kΩ?
25. 25.Which of these is measured in volts (V)? (a) the flow of charge (b) current (c) how much a part resists (d) the push of a cell
26. 26.📏 Which unit measures the push of a cell? (a) watt (W) (b) ohm (Ω) (c) volt (V) (d) ampere (A)
27. 27.True or false: power is measured in ohms (Ω). (a) True (b) False
28. 28.True or false: the ammeter is joined in series. (a) True (b) False
29. 29.📏 How many kilo-ohms (kΩ) is 9100 Ω? =
30. 30.True or false: voltage is measured in volts (V). (a) True (b) False
31. 31.📏 How many amperes (A) is 2960 mA? =
32. 32.📏 How many kilowatts (kW) is 2700 W? =
33. 33.True or false: resistance is measured in amperes (A). (a) True (b) False
34. 34.📏 How many milliamperes (mA) is 2.54 A?
35. 35.📏 How many milliamperes (mA) is 0.64 A?
36. 36.📏 How many milliamperes (mA) is 2.89 A?
37. 37.Which of these is measured in ohms (Ω)? (a) the flow of charge (b) resistance (c) the push of a cell (d) energy used each second
38. 38.📏 How many kilowatts (kW) is 3750 W? =
39. 39.Which of these is measured in volts (V)? (a) current (b) energy used each second (c) voltage (d) resistance
40. 40.True or false: energy used each second is measured in watts (W). (a) False (b) True

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